MACK VMAC IV OBD 2013, Year 2014 newer Service Manual

SSeerrvviiccee IInnffoorrmmaattiioonn

Trucks

Group 28

Release1

Engine Control Module (ECM),

AftertreatmentControlModule (ACM),

VMAC IV

Diagnostic Trouble Code (DTC)

89091093

Foreword

The descriptions and service procedures contained in this manual are based on designs and techni­cal studies carried out through January 2013.

The products are under continuous development. Vehicles and components produced after the
above date may therefore have different specifications and repair methods. When this is deemed to
have a significant bearing on this manual, an updated version of this manual will be issued to cover
the changes.

The new edition of this manual will update the changes.

In service procedures where the title incorporates an operation number, this is a reference to an V.S.
T. (Volvo Standard Times).

Service procedures which do not include an operation number in the title are for general information
and no reference is made to an V.S.T.

Each section of this manual contains specific safety information and warnings which must be re­viewed before performing any procedure. If a printed copy of a procedure is made, be sure to also
make a printed copy of the safety information and warnings that relate to that procedure. The follow­ing levels of observations, cautions and warnings are used in this Service Documentation:

Note: Indicates a procedure, practice, or condition that must be followed in order to have the vehicle
or component function in the manner intended.

Caution: Indicates an unsafe practice where damage to the product could occur.

Warning: Indicates an unsafe practice where personal injury or severe damage to the product could

occur.

Danger: Indicates an unsafe practice where serious personal injury or death could occur.

Mack Trucks, Inc.

Greensboro, NC USA

Order number: PV776-89091093

©2013 Mack Trucks, Inc., Greensboro, NC USA

All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or
transmitted in any forms by any means, electronic, mechanical, photocopying, recording or other­wise, without the prior written permission of Mack Trucks, Inc.

USA57777

Troubleshooting............................................................................................................................. 1

Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) .........................................................1

Group 28

Engine Control Module (ECM) Diagnostic Trouble Codes

Troubleshooting

Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs)

(DTCs)

The manufacturer scan tool is the preferred tool for perform­ing diagnostic work. Contact your local dealer for more infor­mation or visit “www.premiumtechtool.com”.

System Overview

Multiple electronic control units (ECUs) are used; the engine
control module (ECM), instrument control module (ICM), Ve­hicle Electronic Control Unit (VECU), transmission control mod­ule (TCM), the gear selector control module (GSCM) and the
aftertreatment control module (ACM). Together, these modules
operate and communicate data link to control a variety of en­gine and vehicle cab functions. The ECM controls a variety of
functions related to operation of the engine. The ECM works in
conjunction with the ACM to control the EATS system and re­duce emissions.. The VECU controls cruise control functions,
accessory relay controls and idle shutdown functions.

In addition to their control functions, the modules have on board
diagnostic (OBD) capabilities. The OBD is designed to detect
faults or abnormal conditions that are not within normal operat­ing parameters. When the system detects a fault or abnormal
condition, the fault will be logged, the vehicle operator will be
advised that a fault has occurred by illumination a malfunction
indicator lamp (MIL). The module may initiate the engine shut­down procedure if the system determines that the fault could
damage the engine.

Note: The use of a scan tool is necessary to perform diagnostic
work as well as clearing of any diagnostic trouble codes
(DTCs). DTC(s) can no longer be cleared using the vehicles in­strument cluster digital display and stalk switch control.

In some situations when a fault is detected, the system will en­ter a "derate" mode. The derate mode allows continued vehicle
operation but the system may substitute a sensor or signal val­ue that may result in reduced performance. In some instances,
the system will continue to function but engine power may be
limited to protect the engine and vehicle. Diagnostic trouble co­des (DTCs) logged in the system memory can later be read, to
aid in diagnosing the problem using a Premium Tech Tool.

The VECU and ECM are dependent on each other to perform
their specific control functions. In addition to switch and sensor
data, the broadcast of data between modules also includes var­ious calculations and conclusions that each module has devel­oped, based on the input information it has received.

1

Group 28 System Electronic Control Unit (ECU) Overview

System Electronic Control Unit (ECU) Overview

The ECM monitors engine parameters to monitor the engine
system's performance in real time. This is performed to aid the
ECM with its self diagnostic capabilities. Many sensors are
used for input to the emission control system.

The system contains the following “emission critical” ECUs that
are monitored;

• Engine Control Module (ECM)

• Vehicle Electronic Control Unit (VECU)

• Aftertreatment Control Module (ACM)

• Aftertreatment Nitrogen Oxides (NOx) Sensors

• Engine Variable Geometry Turbocharger (VGT) Smart Re-

mote Actuator (SRA)

These ECUs all communicate with the ECM via data links. The
VECU communicates across the SAE J1939 (CAN1) data link
while the others use the SAE J1939-7 (CAN2) data link. The
OBD systems use SAE J2284 (ISO) data link for communica­tion with scan tools. Scan tools compliant with ISO 15031–5
(SAE J1979) or ISO 14229 will be able to access all emission
critical data from the ECM and ACM. The ECM gateways all of
the DTCs and descriptions from the VECU, NOx Sensors and
the VGT-SRA. The use of a scan tool is necessary to perform
diagnostic work as well as clearing of any diagnostic trouble co­des (DTCs). DTC(s) can no longer be cleared using the ve­hicles instrument cluster digital display and stalk switch control.

Malfunction Indicator Lamp (MIL), Description and Location

A MIL located in the instrument cluster. This amber colored
lamp is used to inform the driver that an “emission critical” mal­function signal has occurred.

W2036007

2

Group 28 OBD2013 Code Definition

OBD2013 Code Definition

The Diagnostic Trouble Code follows a standardized format. All
DTC’s have a letter followed by a 4-digit code. Here is a break­down of what an OBD code means.

First Character

• P=Powertrain

• B=Body

• C=Chassis (not used in NA yet)

• U=Network (Data Link), power supply

• P00XX Fuel and air metering and Auxiliary Emissions controls

• P01XX Fuel and air metering

• P02XX Fuel and air metering

• P03XX Ignition system or misfire

• P04XX Auxiliary Emissions Controls

• P05XX Vehicle Speed, Idle control, auxiliary inputs

• P06XX Computer and Auxiliary inputs

• P07XX Transmission

• P08XX Transmission

• P09XX Transmission

• P1XX manufacturer controlled

• P2XX SAE controlled DTCs

• P3XX Manufacturer controlled and SAE reserved

Fifth and Sixth Digit-(if applicable)

• Failure Type Byte (FTB)

The DTC Failure Type Byte defines the DTC Failure Category and Sub Type of a base DTC. It represents the type of fault in the
circuit or system (e.g. sensor open circuit, sensor shorted to ground, algorithm based failure, etc).

• 00 = No Subtype information

• 01 = General Electrical Failure

• 02 = General Signal Failure

• 03 = FM (Frequency Modulated) PWM (Pulse With Modulated) failures

• 04 = System internal Failures

• 05 = System Programming Failures

3

Group 28 OBD2013 Code Definition

• 06 = Algorithm Based Failures

• 07 = Mechanical Failures

• 08 = Bus Signal/Message Failures

• 09 = Component Failures

• 10 = ISO/SAE reserved

• 11 = Circuit short to ground

• 12 = Circuit short to battery

• 13 = Circuit open

• 14 = Circuit short to ground or open

• 15 = Circuit short to battery or open

• 16 = Circuit voltage below threshold

• 17 = Circuit voltage above threshold

• 18 = Circuit current below threshold

• 19 = Circuit current above threshold

• 1A = Circuit resistance below threshold

• 1B = Circuit resistance above threshold

• 1C = Circuit voltage out of range

• 1D = Circuit current out of range

• 1E = Circuit resistance out of range

• 1F = Circuit intermittent

• 20 = ISO/SAE reserved

• 21 = Signal amplitude < minimum

• 22 = Signal amplitude > minimum

• 23 = Signal stuck low

• 24 = Signal stuck high

• 25 = Signal shape/wave form failure

• 26 = Signal rate of change below threshold

• 27 = Signal rate of change above threshold

• 28 = Signal bias level out of range/zero adjustment failure

• 29 = Signal invalid

• 2A = ISO/SAE reserved

4

Group 28 OBD2013 Code Definition

• 2B = ISO/SAE reserved

• 2C = ISO/SAE reserved

• 2D = ISO/SAE reserved

• 2E = ISO/SAE reserved

• 2F = Signal erratic

• 30 = ISO/SAE reserved

• 31 = No signal

• 32 = Signal low time < minimum

• 33 = Signal low time > maximum

• 34 = Signal high time < minimum

• 35 = Signal high time > maximum

• 36 = Signal frequency too low

• 37 = Signal frequency too high

• 38 = Signal frequency incorrect

• 39 = Signal has too few pulses

• 3A = Signal has too many pulses

• 3B = ISO/SAE reserved

• 3C = ISO/SAE reserved

• 3D = ISO/SAE reserved

• 3F = ISO/SAE reserved

• 40 = ISO/SAE reserved

• 41 = General checksum failure

• 42 = General memory failure

• 43 = Special memory failure

• 44 = Data memory failure

• 45 = Program memory failure

• 46 = Calibration/parameter memory failure

• 47 = Watchdog/safety µC failure

• 48 = Supervision software failure

• 49 = Internal electronic failure

• 4A = Incorrect component installed

5

Group 28 OBD2013 Code Definition

• 4B = Over temperature

• 4C = ISO/SAE reserved

• 4D = ISO/SAE reserved

• 4F = ISO/SAE reserved

• 50= ISO/SAE reserved

• 51 = Not programmed

• 52 = Not activated

• 53 = Deactivated

• 54 = Missing calibration

• 55 = Not configured

• 56 = ISO/SAE reserved

• 5A = ISO/SAE reserved

• 5B = ISO/SAE reserved

• 5C = ISO/SAE reserved

• 5D = ISO/SAE reserved

• 5F = ISO/SAE reserved

• 60 = ISO/SAE reserved

• 61 = Signal calculation failure

• 62 = Signal compare failure

• 63 = Circuit/component protection time-out

• 64 = Signal plausibility failure

• 65 = Signal has too few transitions/events

• 66 = Signal has too many transitions/events

• 67 = Signal incorrect after event

• 68 = Event information

• 69 = ISO/SAE reserved

• 6A = ISO/SAE reserved

• 6B = ISO/SAE reserved

• 6C = ISO/SAE reserved

• 6D = ISO/SAE reserved

• 6F = ISO/SAE reserved

• 70 = ISO/SAE reserved

6

Group 28 OBD2013 Code Definition

• 71 = Actuator stuck

• 72 = Actuator stuck open

• 73 = Actuator stuck closed

• 74 = Actuator slipping

• 75 = Emergency position not reachable

• 76 = Wrong mounting position

• 77 = Commanded position not reachable

• 78 = Alignment or adjustment incorrect

• 79 = Mechanical linkage failure

• 7A = Fluid leak or seal failure

• 7B = Low fluid level

• 7C = ISO/SAE reserved

• 7D = ISO/SAE reserved

• 7C = ISO/SAE reserved

• 7D = ISO/SAE reserved

• 7F = ISO/SAE reserved

• 80 = ISO/SAE reserved

• 81 = Invalid serial data received

• 82 = Alive/sequence counter incorrect/not updated

• 83 = Value of signal protection calculation incorrect

• 84 = Signal below allowable range

• 85 = Signal above allowable range

• 86 = Signal invalid

• 87 = Missing message

• 88 = Bus off

• 89 = ISO/SAE reserved

• 8A = ISO/SAE reserved

• 8B = ISO/SAE reserved

• 8C = ISO/SAE reserved

• 8D = ISO/SAE reserved

• 8F = ISO/SAE reserved

7

Group 28 OBD2013 Code Definition

• 90 = ISO/SAE reserved

• 91 = Parametric

• 92 = Performance or incorrect operation

• 93 = No operation

8

Group 28 OBD2013 Diagnostic Trouble Codes (DTC)

OBD2013 Diagnostic Trouble Codes (DTC)

“P0016 Camshaft Position Sensor: Rationality Low”, page 95

“P0046 VGT Position Actuator: VGT Mechanical Fault”, page 118

“P006E VGT Position Actuator: Low Supply Voltage”, page 120

“P0070 Ambient Air Temperature Sensor (AAT): Open Circuit”, page 129

“P0072 Ambient Air Temperature Sensor (AAT): Short Circuit Low”, page 129

“P009A Intake Manifold Temperature Sensor (IMT): Rationality Monitor”, page 78

“P00AF VGT Position Actuator: Bad Device”, page 118

“P0105 Intake Manifold Pressure Sensor (IMP): Open Circuit Check”, page 71

“P0069 Intake Manifold Pressure Sensor Monitor”, page 70

“P0108 Intake Manifold Pressure Sensor (IMP): Short Circuit High”, page 71

“P0110 Intake Manifold Temperature Sensor (IMT): Open Circuit Check”, page 79

“P0112 Intake Manifold Temperature Sensor (IMT): Short Circuit Low”, page 79

“P0115 Engine Coolant Temperature Sensor (ECT): Open Circuit Check”, page 66

“P0116 Engine Coolant Temperature Sensor (ECT): Sensor Stuck Low Monitor”, page 65

“P0117 Engine Coolant Temperature Sensor (ECT): Short Circuit Low”, page 66

“P0128 Engine Cooling System: Stuck Open or Leaking Thermostat Monitor”, page 64

“P0195 Engine Oil Temperature Sensor (OTS): Open Circuit Check”, page 89

“P0196 Engine Oil Temperature Sensor (OTS): Rationality Monitor”, page 88

“P0197 Engine Oil Temperature Sensor (OTS): Short Circuit Low”, page 89

“P0201 Engine Fuel Injectors: Short Circuit Low (Injector 1)”, page 125

“P0202 Engine Fuel Injectors: Short Circuit Low (Injector 2)”, page 125

“P0203 Engine Fuel Injectors: Short Circuit Low (Injector 3)”, page 126

“P0204 Engine Fuel Injectors: Short Circuit Low (Injector 4)”, page 126

“P0205 Engine Fuel Injectors: Short Circuit Low (Injector 5)”, page 127

“P0206 Engine Fuel Injectors: Short Circuit Low (Injector 6)”, page 127

“P0234 Boost Pressure: Overboost”, page 41

“P0262 Engine Fuel Injectors: Short Circuit High (Injector 1)”, page 122

“P0265 Engine Fuel Injectors: Short Circuit High (Injector 2)”, page 122

“P0268 Engine Fuel Injectors: Short Circuit High (Injector 3)”, page 123

“P026C Fuel Injector (low mass flow)”, page 17

“P026D Fuel Injector (high mass flow)”, page 18

“P0271 Engine Fuel Injectors: Short Circuit High (Injector 4)”, page 123

“P0274 Engine Fuel Injectors: Short Circuit High (Injector 5)”, page 124

“P0277 Engine Fuel Injectors: Short Circuit High (Injector 6)”, page 124

“P0299 Boost Pressure: Underboost”, page 40

“P02CD Single Cylinder High Mass Flow Monitor (Cylinder 1)”, page 19

9

Group 28 OBD2013 Diagnostic Trouble Codes (DTC)

“P02CF Single Cylinder High Mass Flow Monitor (Cylinder 2)”, page 20

“P02D1 Single Cylinder High Mass Flow Monitor (Cylinder 3)”, page 20

“P02D3 Single Cylinder High Mass Flow Monitor (Cylinder 4)”, page 21

“P02D5 Single Cylinder High Mass Flow Monitor (Cylinder 5)”, page 21

“P02D7 Single Cylinder High Mass Flow Monitor (Cylinder 6)”, page 22

“P0300 Misfire Multiple Cylinders”, page 29

“P0301 Single Cylinder Low Mass Flow Monitor (Cylinder 1)”, page 23

“P0301 Misfire Single Cylinder (Cylinder 1)”, page 30

“P0302 Single Cylinder Low Mass Flow Monitor (Cylinder 2)”, page 24

“P0302 Misfire Single Cylinder (Cylinder 2)”, page 31

“P0303 Single Cylinder Low Mass Flow Monitor (Cylinder 3)”, page 25

“P0303 Misfire Single Cylinder (Cylinder 3)”, page 32

“P0304 Single Cylinder Low Mass Flow Monitor (Cylinder 4)”, page 26

“P0304 Misfire Single Cylinder (Cylinder 4)”, page 33

“P0305 Single Cylinder Low Mass Flow Monitor (Cylinder 5)”, page 27

“P0305 Misfire Single Cylinder (Cylinder 5)”, page 34

“P0306 Single Cylinder Low Mass Flow Monitor (Cylinder 6)”, page 28

“P0306 Misfire Single Cylinder (Cylinder 6)”, page 35

“P0335 Crankshaft Position Sensor: Open Circuit”, page 93

“P0336 Crankshaft Position Sensor: Rationality High”, page 94

“P0339 Crankshaft Position Sensor: Rationality Low”, page 93

“P0340 Camshaft Position Sensor: Open Circuit”, page 95

“P0341 Camshaft Position Sensor: Rationality High”, page 96

“P0401 EGR System (Low Flow)”, page 36

“P0402 EGR System (High Flow)”, page 37

“P0403 EGR Valve Actuator: Open Circuit”, page 121

“P0406 EGR Differential Pressure Sensor: Short Circuit High”, page 75

“P0409 EGR Differential Pressure Sensor: Open Circuit Check”, page 75

“P040A EGR Temperature Sensor: Open Circuit Check”, page 81

“P040B EGR Temperature Sensor: Rationality Monitor”, page 80

“P040C EGR Temperature Sensor: Short Circuit Low”, page 81

“P20EE NOx Catalyst: Conversion Efficiency”, page 45

“P0420 NOx Catalyst: Missing SCR”, page 46

“P0420 NOx Catalyst: Reductant Delivery Performance”, page 47

“P0420 NMHC Catalyst: Conversion Efficiency”, page 43

“P0421 NMHC Catalyst: Missing Substrate”, page 44

“P046C EGR Differential Pressure Sensor: DP Sensor Rationality”, page 74

“P0489 EGR Valve Actuator: Short Circuit Low”, page 121

10

Group 28 OBD2013 Diagnostic Trouble Codes (DTC)

“P04DB Crankcase Ventilation: Disconnected Pipe/Separator Monitor”, page 67

“P04D9 EGR System: Feedback Control (Saturated Low)”, page 39

“P04DA EGR System: Feedback Control (Saturated High)”, page 39

“P0500 Wheel Based Vehicle Speed: Vehicle Speed Sensor (VSS): Open Circuit”, page 131

“P0502 Wheel Based Vehicle Speed: Vehicle Speed Sensor (VSS): Short Circuit Low”, page 131

“P0506 Idle Engine Speed Rationality: Idle Speed Low”, page 141

“P0507 Idle Engine Speed Rationality: Idle Speed High”, page 142

“P051A Crankcase Pressure Sensor (CPS): Open Circuit Check”, page 77

“P051B Crankcase Pressure Sensor (CPS): Rationality Monitor”, page 76

“P051D Crankcase Pressure Sensor (CPS): Short Circuit High”, page 77

“P0520 Engine Oil Pressure Sensor (OPS): Open Circuit Check”, page 91

“P0521 Engine Oil Pressure Sensor: Rationality Monitor”, page 90

“P0523 Engine Oil Pressure Sensor (OPS): Short Circuit High”, page 91

“P0544 Pre-DOC Temperature Sensor: Open Circuit Check”, page 85

“P0545 Pre-DOC Temperature Sensor: Short Circuit Low”, page 85

“P054E Idle Engine Fuel Rationality: Fuel Rationality Low”, page 143

“P054F Idle Engine Fuel Rationality: Fuel Rationality High”, page 144

“P05E4 Parking Brake Switch: Short Circuit Low”, page 134

“P0652 Idle Validation Switch (IVS): Short Circuit Low”, page 146

“P0657 Actuator Supply #1 ACM: Open Circuit”, page 149

“P0658 Actuator Supply #1 ACM: Short Circuit Low”, page 149

“P0659 Actuator Supply #1 ACM: Short Circuit High”, page 150

“P06B1 ACM Sensor Supply #1: Below Range”, page 147

“P06B1 ECM Supply #1: Below Range”, page 135

“P06B2 ACM Sensor Supply #1: Above Range”, page 147

“P06B2 ACM Sensor Supply #1: Above Range”, page 147

“P06B4 ECM Supply #2: Below Range”, page 136

“P06B4 ACM Sensor Supply #2: Below Range”, page 148

“P06B5 ACM Sensor Supply #2: Above Range”, page 148

“P06B5 ECM Supply #2: Above Range”, page 136

“P06E7 ECM Supply #3: Below Range”, page 137

“P06E8 ECM Supply #3: Above Range”, page 137

“P1080 Actuator Supply #2 ACM: Open Circuit”, page 150

“P1095 Actuator Supply #2 ACM: Short Circuit Low”, page 151

“P1096 Actuator Supply #2 ACM: Short Circuit High”, page 151

“P1131 Aftertreatment Hydrocarbon Air Purge Valve: Short Circuit Low”, page 102

“P1134 Aftertreatment Hydrocarbon Air Purge Valve: Open Circuit”, page 102

“P2002 PM Filter Efficiency Monitor”, page 49

11

Group 28 OBD2013 Diagnostic Trouble Codes (DTC)

“P2031 Post-DOC Temperature Sensor: Open Circuit Check”, page 86

“P2032 Post-DOC Temperature Sensor: Short Circuit Low”, page 86

“P2047 Aftertreatment SCR Dosing Valve: Open Circuit”, page 116

“P2048 Aftertreatment SCR Dosing Valve: Short Circuit Low”, page 117

“P2049 Aftertreatment SCR Dosing Valve: Short Circuit High”, page 116

“P204A Aftertreatment DEF Pump Pressure Sensor: Open Circuit”, page 114

“P204B Aftertreatment DEF Pump Pressure Sensor: Rationality”, page 113

“P204C Aftertreatment DEF Pump Pressure Sensor: Short Circuit Low”, page 114

“P205A Aftertreatment DEF Tank Temperature Sensor: Open Circuit”, page 106

“P205B Aftertreatment DEF Tank Temperature Sensor: Rationality Low”, page 105

“P205C Aftertreatment DEF Tank Temperature Sensor: Short Circuit Low”, page 106

“P2080 Exhaust Gas Temperature Sensors: Pre-DOC Rationality Check”, page 82

“P2084 Exhaust Gas Temperature Sensor: Post-DOC Rationality Check”, page 83

“P208A Aftertreatment DEF Pump: Open Circuit”, page 108

“P208C Aftertreatment DEF Pump: Short Circuit Low”, page 109

“P208D Aftertreatment DEF Pump: Short Circuit High”, page 108

“P208E Aftertreatment SCR Dosing Valve: Functional Check”, page 115

“P209F Aftertreatment DEF Tank Temperature Sensor: Rationality High”, page 105

“P20A0 Aftertreatment DEF Pump Direction Valve: Open Circuit”, page 111

“P20A1 Aftertreatment DEF Pump Direction Valve: Functional Check”, page 110

“P20A2 Aftertreatment DEF Pump Direction Valve: Short Circuit Low”, page 112

“P20A3 Aftertreatment DEF Pump Direction Valve: Short Circuit High”, page 111

“P20D7 Aftertreatment Hydrocarbon Doser Solenoid: Open Circuit”, page 100

“P20D9 Aftertreatment Hydrocarbon Doser Solenoid: Short Circuit Low”, page 100

“P20DD Aftertreatment Hydrocarbon Doser Fuel Pressure Sensor: Open Circuit”, page 98

“P20E0 Aftertreatment Hydrocarbon Doser Fuel Pressure Sensor: Short Circuit High”, page 98

“P20E8 Aftertreatment DEF Pump: Pump Pressure Build Up”, page 107

“P2109 Accelerator Pedal Position Sensor: Rationality Low”, page 132

“P2136 Idle Validation Switch (IVS): IVS Does Not Match Accelerator Pedal Position”, page 145

“P215A Wheel Based Vehicle Speed: Vehicle Speed Sensor (VSS): Rationality”, page 130

“P2163 Accelerator Pedal Position Sensor: Rationality High”, page 132

“P218F Aftertreatment DEF Pump: Functional Check”, page 107

“P2200 NOx Sensor #1: Open Circuit”, page 55

“P2201 NOx Sensor #1: Rationality Monitor”, page 51

“P2203 NOx Sensor #1: Short Circuit Low”, page 55

“P220A NOx Sensor #1: Supply Voltage Out of Range”, page 56

“P220B NOx Sensor #2: Supply Voltage Out of Range”, page 63

“P220E NOx Sensor #1: Sensor Start Up Monitor”, page 53

12

Group 28 OBD2013 Diagnostic Trouble Codes (DTC)

“P220F NOx Sensor #2: Sensor Start Up Monitor”, page 59

“P221A NOx Sensors: NOx Sensor Measurement Rationality Monitor”, page 61

“P2226 Barometric Pressure Sensor (BPS): Open Circuit Check”, page 69

“P2227 Barometric Pressure Sensor (BPS): Rationality Monitor”, page 68

“P2229 Barometric Pressure Sensor (BPS): Short Circuit High”, page 69

“P225C Inlet and Outlet NOx Sensor Stuck High ”, page 52

“P225E NOx Sensor #2: Rationality High Monitor”, page 58

“P226C Boost Pressure Slow Response”, page 42

“P229E NOx Sensor #2: Open Circuit”, page 62

“P229F NOx Sensor #2: Rationality Low Monitor”, page 57

“P22A1 NOx Sensor #2: Short Circuit Low”, page 62

“P22FB NOx Sensor #1: Bad Device Monitor”, page 54

“P22FE NOx Sensor #2: Bad Device Monitor”, page 60

“P240F EGR System Slow Response”, page 38

“P242A Post-DPF Temperature Sensor: Open Circuit Check”, page 87

“P242B Exhaust Gas Temperature Sensors: Post-DPF Rationality Check”, page 84

“P242C Post-DPF Temperature Sensor: Short Circuit Low”, page 87

“P244A PM Filter: Missing Substrate”, page 50

“P2452 Aftertreatment Differential Pressure Sensor (DPS): Open Circuit Check”, page 73

“P2453 Aftertreatment Differential Pressure Sensor (DPS): DPS Differential Pressure Sensor”, page 72

“P2454 Aftertreatment Differential Pressure Sensor (DPS): Short Circuit Low”, page 73

“P249D NOx Catalyst: Feedback Control (Saturated Low Monitor)”, page 48

“P249E NOx Catalyst: Feedback Control (Saturated High Monitor)”, page 48

“P2578 Turbocharger Speed Sensor (TSS): Missing Signal Monitor”, page 92

“P2581 Turbocharger Speed Sensor (TSS): Rationality High”, page 92

“P2697 Aftertreatment Hydrocarbon Dosing Valve: Open Circuit”, page 104

“P2698 Aftertreatment Hydrocarbon Dosing Valve: Functional”, page 103

“P2699 Aftertreatment Hydrocarbon Dosing Valve: Short Circuit Low”, page 104

“U0001 CAN Link: Missing Signal on Backbone 2”, page 140

“U0010 CAN Link: SAE J1939-1 Missing Signal”, page 138

“U0080 CAN Link: Powertrain CAN Missing Signal”, page 139

“U010C VGT Position Actuator: Missing Signal”, page 119

“U0141 CAN Link: Missing Signal from the VECU”, page 140

“U0155 Ambient Air Temperature Sensor (AAT): Missing Signal”, page 128

“U029D NOx Sensor #1: Missing Signal”, page 56

“U029E NOx Sensor #2: Missing Signal”, page 63

“U116F CAN Link: Missing ACM at Engine Subnet”, page 139

13

Group 28 Definitions and Terminology

Definitions and Terminology

Confirmed Fault Code:

The diagnostic trouble code (DTC) stored when an OBD sys­tem has confirmed that a malfunction exists.

Continuous Monitors:

Monitors that are always running after enabling criteria has
been met.

Deactivate:

Means to turn-off, shutdown, desensitize, or otherwise make in­operable through software programming or other means during
the actual life of the engine.

Diagnostic or Emission Critical:

Refers to the engine and any other on-board electronic control
unit containing software that has primary control over any of the
required monitors, excluding anti-lock brake system (ABS) con­trol units or stability/traction control units, and has primary con­trol over the diagnostics for more than two of the components
required to be monitored.

Diagnostic Trouble Code (DTC)

In the heavy truck industry, codes that are developed by SAE
standards to help diagnose and track problems in a vehicle de­tected by its on-board diagnostics (OBD).

Drive Cycle:

The combination of driving conditions that enable a monitor and
allow it to be completed.

It is defined as a trip that meets any of the four conditions
below:

• Begins with engine start and ends with engine shutoff

• Begins with engine start and ends after four hours of continu-

ous engine-on operation

• Begins at the end of the previous four hours of continuous

engine-on operation and ends after four hours of continuous
engine-on operation

• Begins at the end of the previous four hours of continuous

engine-on operation and ends with engine shutoff

Enable Conditions:

A combination of conditions occurring to trigger a specific moni­tor to run.

Engine Misfire:

Means lack of combustion in the cylinder due to absence of
spark, poor fuel metering, poor compression, or any other
cause. This does not include lack of combustion events in non­active cylinders due to default fuel shut-off or cylinder deactiva­tion strategies.

14

Group 28 Engine Start:

Engine Start:

Is defined as the point when the engine reaches a speed 150
rpm below the normal, warmed-up idle speed (as determined in
the drive position for vehicles equipped with an automatic
transmission).

Fault Memory:

Information pertaining to malfunctions stored in the onboard
computer, including fault codes, stored engine conditions, and
MIL status.

Functional Check:

For an output component or system means verification of prop­er response of the component and system to a computer
command.

Ignition Cycle:

A drive cycle that begins with engine start, meets the engine
start definition for at least two seconds plus or minus one sec­ond, and ends with engine shutoff.

Key On, Engine Off (KOEO):

Refers to a vehicle with the ignition key in the engine run posi­tion (not engine crank or accessory position) but with the engine
not running.

Key On, Engine Running (KOER):

Refers to a vehicle with the ignition key in the engine run posi­tion with the engine running.

Malfunction:

Means any deterioration or failure of a component that causes
the performance to be outside of the applicable limits.

Malfunction Indicator Lamp (MIL):

An amber colored lamp located in the instrument cluster used
to inform the driver that an “emission critical” malfunction signal
has occurred.

MIL-On Fault Code:

For engines using ISO15765 or SAE J1979 data link, refers to
the DTC stored when an OBD system has confirmed that a mal­function exists (typically on the second drive cycle that the mal­function is detected).

Monitor

Testing routines, performed by the ECM and ACM, which are
designed to indicate that all of the components within a portion
of the Engine Management System (EMS) are working properly
to minimize emissions.

Noncontinuous Monitors:

Monitors that are only run only when their individual enabling
criteria is met.

15

Group 28 On-Board Diagnostics (OBD):

On-Board Diagnostics (OBD):

A term referring to a vehicle's self-diagnostic, monitoring and
fault code reporting capability.

Pending Fault Code:

A DTC stored upon the initial detection of a malfunction (typi­cally on a single drive cycle) prior to illumination of the MIL.

Permanent Fault Code:

A confirmed or MIL-on fault code that is currently commanding
the MIL on and is stored in NVRAM.

Rationality Fault Diagnostic:

For an input component means verification of the accuracy of
the input signal while in the range of normal operation and when
compared to all other available information.

Warm-Up Cycle:

Means sufficient vehicle operation such that the coolant tem­perature has risen by at least 40 degrees Fahrenheit from en­gine start and reaches a minimum temperature of at least 160
degrees Fahrenheit (140 degrees Fahrenheit for applications
with diesel engines).

16

Group 28 Fuel Pressure, Timing and Quantity

Fuel Pressure, Timing and Quantity

All cylinders may have pressure, timing and quantity deviations
which result in significant change in engine performance and
exhaust gas composition. These deviations may in part be used
to diagnose and evaluate a faulty fuel system.

Using the NOx sensors on the vehicle.

P026C Fuel Injector (low mass flow)

DTC P026C

Component / System Fuel System Monitoring Injection Quantity – Low

Monitor Strategy Description Actual air fuel ratio based fueling compared to expected

Fault Limit Ratio = (Air fuel ratio based estimated fuel flow Modeled Fuel flow) < 0.85

Enable Conditions

• Engine Exhaust Gas Temperature 100 - 400 °C

• DOC Outlet Temperature 200 - 400 °C

• DPF Outlet Temperature 200 - 400 °C

• Average Engine Speed 1000 - 2000 RPM

• Average Engine Torque > 1000 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0071, P0108, P0105, P0340, P0335, P2200,

P2203, P221A

Time Required For DTC To Be Set 45 seconds (accumulated time)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

17

Group 28 P026D Fuel Injector (high mass flow)

P026D Fuel Injector (high mass flow)

DTC P026D

Component / System Fuel System Monitoring Injection Quantity – High

Monitor Strategy Description Actual air fuel ratio based fueling compared to expected

Fault Limit Ratio = (Air fuel ratio based estimated fuel flow Modeled Fuel flow) > 1.42

Enable Conditions

• Engine Exhaust Gas Temperature 100 - 400 °C

• DOC Outlet Temperature 200 - 400 °C

• DPF Outlet Temperature 200 - 400 °C

• Average Engine Speed 1000 - 2000 RPM

• Average Engine Torque > 1000 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0071, P0108, P0105, P0340, P0335, P2200,

P2203, P221A

Time Required For DTC To Be Set 45 seconds (accumulated time)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

18

Group 28

Fuel Pressure, Timing and Quantity Threshold – Single Cylin-

der High Mass Flow

Fuel Pressure, Timing and Quantity Threshold – Single Cylinder High Mass
Flow

This OBD monitor works by observing engine acceleration as
measured by the crank angle sensor. This acceleration meas­urement is taken during a crank angle window where the cur­rent firing cylinder should be generating it’s torque. Acceleration
is then filtered with a low pass filter and after all cylinders have
fired, an average acceleration of all cylinders is generated. The
error of each cylinder is calculated as the deviation of it’s

P02CD Single Cylinder High Mass Flow Monitor (Cylinder 1)

DTC P02CD

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 1)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

individual acceleration reading from the average acceleration
value.

An average quantity offset value for all cylinders (either positive
or negative) is calculated and if a single cylinder’s fuel value de­viates from a calibrated limit a DTC is set.

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

19

Group 28 P02CF Single Cylinder High Mass Flow Monitor (Cylinder 2)

P02CF Single Cylinder High Mass Flow Monitor (Cylinder 2)

DTC P02CF

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 2)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P02D1 Single Cylinder High Mass Flow Monitor (Cylinder 3)

DTC P02D1

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 3)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

20

Group 28 P02D3 Single Cylinder High Mass Flow Monitor (Cylinder 4)

P02D3 Single Cylinder High Mass Flow Monitor (Cylinder 4)

DTC P02D3

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 4)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P02D5 Single Cylinder High Mass Flow Monitor (Cylinder 5)

DTC P02D5

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 5)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

21

Group 28 P02D7 Single Cylinder High Mass Flow Monitor (Cylinder 6)

P02D7 Single Cylinder High Mass Flow Monitor (Cylinder 6)

DTC P02D7

Component / System Fuel System Monitoring Injection Quantity – High (Cylinder 6)

Monitor Strategy Description Single cylinder fueling offset

Fault Limit Fueling offset of any one injector at idle < -1.5 deg CA

Enable Conditions

• Vehicle Speed < 0.1 km/h

• Engine Speed 525 - 725 RPM

• PTO Not Active

• Engine Torque 0 - 600 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0301, P0302, P0303, P0304,

P0305, P0306, P0300, P0262, P0265, P0268, P0271, P0274, P0277, P0201,
P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 600 seconds (accumulated time at idle)

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

22

Group 28

Fuel Pressure, Timing and Quantity Threshold – Single Cylin-

der Low Mass Flow

Fuel Pressure, Timing and Quantity Threshold – Single Cylinder Low Mass
Flow

The single cylinder low mass flow malfunction is monitored us­ing the misfire detection monitor. See “Misfire Monitoring at Idle
Conditions”, page 29 for detailed monitor descriptions.

P0301 Single Cylinder Low Mass Flow Monitor (Cylinder 1)

DTC P0301

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 1)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

23

Group 28 P0302 Single Cylinder Low Mass Flow Monitor (Cylinder 2)

P0302 Single Cylinder Low Mass Flow Monitor (Cylinder 2)

DTC P0302

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 2)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

24

Group 28 P0303 Single Cylinder Low Mass Flow Monitor (Cylinder 3)

P0303 Single Cylinder Low Mass Flow Monitor (Cylinder 3)

DTC P0303

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 3)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

25

Group 28 P0304 Single Cylinder Low Mass Flow Monitor (Cylinder 4)

P0304 Single Cylinder Low Mass Flow Monitor (Cylinder 4)

DTC P0304

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 4)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

26

Group 28 P0305 Single Cylinder Low Mass Flow Monitor (Cylinder 5)

P0305 Single Cylinder Low Mass Flow Monitor (Cylinder 5)

DTC P0305

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 5)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

27

Group 28 P0306 Single Cylinder Low Mass Flow Monitor (Cylinder 6)

P0306 Single Cylinder Low Mass Flow Monitor (Cylinder 6)

DTC P0306

Component / System Fuel System Monitoring Injection Quantity – Low (Cylinder 6)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

28

Group 28 Misfire Monitoring at Idle Conditions

Misfire Monitoring at Idle Conditions

This OBD monitor works by observing engine acceleration as
measured by the crank angle sensor. This acceleration meas­urement is taken during a crank angle window where the cur­rent firing cylinder should be generating it’s torque. Acceleration

is then filtered with a low pass filter and after all cylinders have
fired, an average acceleration of all cylinders is generated. The
error of each cylinder is calculated as the deviation of its individ­ual acceleration reading from the average acceleration value.

P0300 Misfire Multiple Cylinders

DTC P0300

Component / System Misfire Monitoring Misfire Multiple Cylinders

Monitor Strategy Description Engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

29

Group 28 P0301 Misfire Single Cylinder (Cylinder 1)

P0301 Misfire Single Cylinder (Cylinder 1)

DTC P0301

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 1)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

30

Group 28 P0302 Misfire Single Cylinder (Cylinder 2)

P0302 Misfire Single Cylinder (Cylinder 2)

DTC P0302

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 2)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

31

Group 28 P0303 Misfire Single Cylinder (Cylinder 3)

P0303 Misfire Single Cylinder (Cylinder 3)

DTC P0303

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 3)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

32

Group 28 P0304 Misfire Single Cylinder (Cylinder 4)

P0304 Misfire Single Cylinder (Cylinder 4)

DTC P0304

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 4)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

33

Group 28 P0305 Misfire Single Cylinder (Cylinder 5)

P0305 Misfire Single Cylinder (Cylinder 5)

DTC P0305

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 5)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

34

Group 28 P0306 Misfire Single Cylinder (Cylinder 6)

P0306 Misfire Single Cylinder (Cylinder 6)

DTC P0306

Component / System Misfire Monitoring Misfire Single Cylinder (Cylinder 6)

Monitor Strategy Description Single cylinder engine flywheel acceleration evaluation

Fault Limit Number of misfire events per cylinder 400 out of 500

Enable Conditions

• Average Engine Speed 525 - 725 RPM

• PTO Not Active

• Number of Cylinders Misfiring < 4 Cylinders

• Engine Torque 0 - 400 Nm

• Vehicle Speed < 0.1 km/h

• Revolution Count 125 Revolutions

• Delay Time After Engine Start 60 seconds

• Delay Time After Enable Condition Met 10 seconds

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0117, P0115, P2229, P2226, P0340, P0335, P0262, P0265, P0268, P0271,

P0274, P0277, P0201, P0202, P0203, P0204, P0205, P0206

Time Required For DTC To Be Set 180 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

35

Group 28 Exhaust Gas Recirculation (EGR) System Monitoring

Exhaust Gas Recirculation (EGR) System Monitoring

This OBD monitor is designed to detect conditions where the
EGR mass flow is lower or higher than demanded by the cur­rent system operation.

Demanded EGR mass flow is modeled from the burned air frac­tion (see the Technical Description for detailed information) re­quest for the current engine operating conditions. Actual EGR

mass flow is computed directly from the output of the EGR Ven­turi differential pressure and temperature sensors. A fault oc­curs if the ratio of measured EGR mass flow to the modeled
(demanded) EGR mass flow meets the threshold.

Ratio = Measured EGR mass flow Modeled EGR mass flow

P0401 EGR System (Low Flow)

DTC P0401

Component / System EGR System - Low Flow

Monitor Strategy Description Compare demanded EGR flow to actual

Fault Limit Ratio = (Measured EGR mass flow Modeled EGR mass flow) < 0.55

Enable Conditions

• Engine Speed 1300 - 1800 RPM

• Engine Torque 625 - 2000 Nm

• EGR Position 70 - 100 %

• EGR Flow Demand 0.1 - 0.4 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P046C, P0234, P0299

Time Required For DTC To Be Set 4 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

36

Group 28 P0402 EGR System (High Flow)

P0402 EGR System (High Flow)

DTC P0402

Component / System EGR System - High Flow

Monitor Strategy Description Compare demanded EGR flow to actual

Fault Limit Ratio = (Measured EGR mass flow Modeled EGR mass flow) > 4.0

Enable Conditions

• Engine Speed 600 - 1600 RPM

• Engine Torque 400 - 2450 Nm

• EGR Position 0 - 80 %

• EGR Flow Demand 0 0.083 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P046C, P0234, P0299

Time Required For DTC To Be Set 5 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

37

Group 28 EGR: Slow Response Emission Threshold

EGR: Slow Response Emission Threshold

This OBD monitor evaluates a slowly responding EGR system
by comparing two evaluation windows. Within a window, de­manded EGR flowrate is evaluated. If a transition occurs within

P240F EGR System Slow Response

DTC P240F

Component /
System

Monitor Strategy
Description

Fault Limit Decreasing

Enable Conditions Decreasing

EGR System - Slow Response

EGR mass flow fails to achieve a flow change

Delta = Modeled EGR mass flow - Measured

EGR mass flow < -0.025

Low Flow Window

• Engine Speed 580 - 1600 RPM

• Engine Torque > 600 Nm

• EGR Mass Flow Demand < 0.05 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

High Flow Window

• Engine Speed 550 - 620 RPM

• Engine Torque 100 - 170 Nm

• EGR Mass Flow Demand 0.03 - 0.05 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

an allowable time, the demanded EGR flow is compared to the
actual flow at the target time to determine if the proper flow was
achieved. If the flow is not achieved then a DTC is raised.

Increasing

Delta = Measured EGR mass flow - Modeled

EGR mass flow < -0.01

Increasing

Low Flow Window

• Engine Speed 650 - 1100 RPM

• Engine Torque 200 - 600 Nm

• EGR Mass Flow Demand 0.01 - 0.2 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

High Flow Window

• Engine Speed 1400 - 1600 RPM

• Engine Torque > 2200 Nm

• EGR Mass Flow Demand 0.06 - 0.13 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P046C, P0234, P0299

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

38

Decreasing

33 seconds

Increasing

23 seconds

Group 28 EGR: Feedback Saturation

EGR: Feedback Saturation

This OBD monitor indicates if the burned air fraction error is sa­turated against a high or low limit. The logic for the monitor eval­uates the time spent at saturation and compares the ratio

P04D9 EGR System: Feedback Control (Saturated Low)

DTC P04D9

Component / System EGR System - Feedback Control

Monitor Strategy Description Saturated low: Difference between demanded and calculated burned air fraction

Fault Limit Ratio = Time spent saturated low total time > 0.9

between the time spent in a saturation mode and the total time
with engine running. A fault is reported whenever the ratio ex­ceeds the fault limit.

Enable Conditions

• Engine Torque 300 - 2500 Nm

• Exhaust Mass Flow 0.1 - 1.0 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P046C, P0234, P0299, P0401, P0402

Time Required For DTC To Be Set 90 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P04DA EGR System: Feedback Control (Saturated High)

DTC P04DA

Component / System EGR System - Feedback Control

Monitor Strategy Description Saturated high: Difference between demanded and calculated burned air fraction

Fault Limit Ratio = Time spent saturated high total time > 0.9

Enable Conditions

• Engine Torque 300 - 2500 Nm

• Exhaust Mass Flow 0.1 - 1.0 kg/s

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P046C, P0234, P0299, P0401, P0402

Time Required For DTC To Be Set 90 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

39

Group 28 Boost Pressure: Under or Over Boost Emission Threshold

Boost Pressure: Under or Over Boost Emission Threshold

This OBD monitor is designed to detect under or over boost
conditions.

Under Boost: Threshold < (Actual boost pressure - Modeled
boost pressure)

A modeled version of boost pressure is calculated continuously
from a map based on engine speed and torque. The modeled
boost pressure is compared to the actual value read from the
boost pressure sensor. A DTC is raised if the threshold is
reached.

Over Boost: Threshold > (Actual boost pressure - Modeled
boost pressure)

P0299 Boost Pressure: Underboost

DTC P0299

Component / System Boost Pressure Underboost

Monitor Strategy Description Comparison of actual boost pressure to a modeled boost pressure

Fault Limit Delta = Actual boost pressure Modeled boost pressure < 50kPa

Enable Conditions

• Engine Speed 1350 - 1700 RPM

• EGR Position 10 - 96%

• VGT Position 5 - 90%

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P0726, P0106, P0490, P045F, P045E, P2563, P0045, U010C, U040D,

P2578, P2581, P2580, P0069, U010C, P2229

Time Required For DTC To Be Set 5 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

40

Group 28 P0234 Boost Pressure: Overboost

P0234 Boost Pressure: Overboost

DTC P0234

Component / System Boost Pressure - Overboost

Monitor Strategy Description Comparison of actual boost pressure to a modeled boost pressure

Fault Limit Delta = Actual boost pressure - Modeled boost pressure > 120 kPa

Enable Conditions

• Engine Speed 1350 - 1700 RPM

• EGR Position 10 - 96%

• VGT Position 5 - 90%

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0069, P0726, P0106, P0490, P045F, P045E, P2563, P0045, U010C, U040D,

P2578, P2581, P2580, P0069, U010C, P2229

Time Required For DTC To Be Set 5 Seconds

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

41

Group 28 Boost Pressure: Slow Response

Boost Pressure: Slow Response

This OBD monitor is designed to detect conditions where the
boost system is slow to respond, indicating degradation in the
boost system. The monitor defines a low boost and a high boost
window based on appropriate engine operating conditions.
When the engine is being operated in the low window, boost
pressure is sampled continuously. When operating conditions
move out of the low window, the last boost pressure value is

retained. At the instant the engine enters the high-speed evalu­ation window, an evaluation timer is started. When the timer ex­pires, the current boost pressure is compared to the retained
value from the low boost window. If the difference does not
meet or exceed the calibration target, the boost pressure slow
response malfunction is detected.

P226C Boost Pressure Slow Response

DTC P226C

Component /
System

Monitor Strategy
Description

Fault Limit Delta = Low pressure window - high pressure window < 5 kPa

Enable Conditions Low Pressure Window

Boost Pressure - Slow Response

Comparison of boost pressures in low/high windows to verify pressures are met.

High Pressure Window

• Engine Speed 400 - 1600 RPM

• Engine Torque 0 - 1000 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Engine Speed 1000 - 1800 RPM

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• None

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

42

Group 28

Non–Methane Hydrocarbon (NMHC) Converting Calalyst:

Conversion Efficiency Emission Threshold

Non–Methane Hydrocarbon (NMHC) Converting Calalyst: Conversion
Efficiency Emission Threshold

The Diesel Oxidation Catalyst (DOC) is constructed from a po­rous ceramic substrate coated in precious metals. It is used to
oxidize fuel in the exhaust stream after the engine, and to gen­erate an exotherm to assist in other EATS systems functionality,
such as raising the temperature of the SCR during cold start
conditions. The OBD monitor for the DOC consists of two

separate system evaluations- one for the effectiveness of the
DOC at oxidizing fuel actively dosed by the Aftertreatment Hy­drocarbon Doser System during cold start up conditions, and
another portion that runs when fuel dosing is not active, where
an evaluation on the physical presence of the substrate is
made.

P0420 NMHC Catalyst: Conversion Efficiency

DTC P0420

Component /
System

Monitor Strategy
Description

Fault Limit Ratio = Calculated total HC slip rate Modeled total HC slip rate > 1.4

Enable Conditions

NMHC Catalyst - Conversion Efficiency

Compare calculated total HC slip rate to modeled total HC slip rate

• DPF Outlet Temperature > 100 °C

• AHI FuelI Injection State Active

• Start Coolant Temperature < 73 °C

• Barometric Pressure 75 - 105 kPa

• Ambient Air Temperature -8 - 55 °C

• Total HC injected > 57g

Disable Conditions

No Active DTC's:

• P2226, P2229, P0110, P0112, P0115, P0117, P20DD, P20E0, P229E, P2200, P0105, P0108;

P2031, P2322, P2084, P242C, P242A, P242B, P0545, P0544, P2080, P1130, P1133, P20DC,
P20D0, P20CF

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

300 seconds (with no more than 45s AHI dosing break)

43

Group 28 P0421 NMHC Catalyst: Missing Substrate

P0421 NMHC Catalyst: Missing Substrate

DTC P0421

Component /
System

NMHC Catalyst - Missing Substrate

Monitor Strategy
Description

Fault Limit Ratio = Engine exhaust temperature rate of change DOC temperature rate of change < 1.5

Enable Conditions

Compare engine exhaust temperature rate of change to DOC temperature rate of change

• Exhaust Gas Temperature Derivative > 3.75 °C/s or < -3.75 °C/s

• Modeled DOC Outlet Temperature Derivative > 3.75 °C/s or < -3.75 °C/s

• AHI Fuel Injection State Not Active

• Number of sub evaluations 8

Disable Conditions

No Active DTC's:

• P2226, P2229, P0110, P0112, P0115, P0117, P20DD, P20E0, P229E, P2200, P0105, P0108;

P2031, P2322, P2084, P242C, P242A, P242B, P0545, P0544, P2080, P1130, P1133, P20DC,
P20D0, P20CF

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

650 seconds (8 sub evaluations. 5 pass of 8 evaluations => PASS, 6 fail of 8 evaluations => FAIL)

44

Group 28

Oxides of Nitrogen (NOX) Converting Catalyst: Conversion

Efficiency Emission Threshold

Oxides of Nitrogen (NOX) Converting Catalyst: Conversion Efficiency
Emission Threshold

This OBD monitor is designed to determine the DEF efficiency
as calculated by using the inputs of the commanded DEF and
the two NOx sensors located upstream and downstream of the
NOx Catalyst.

P20EE NOx Catalyst: Conversion Efficiency

DTC P20EE

Component /
System

NOx Catalyst - Conversion Efficiency

The DEF efficiency evaluation is calculated as an average val­ue over an accumulated exhaust NOx value. A fault condition is
logged if the DEF average efficiency is less than the threshold
fault limit.

Monitor Strategy
Description

Fault Limit Calculated NOx conversion efficiency DOC temperature rate of change < 66%

Enable Conditions

Low NOx conversion efficiency

• Engine Speed 1400 - 1800 RPM

• Exhaust Mass Flow > 0.33 kg/s

• System Out NOx Flow > 0.05 g/s

• Inlet SCR Temperature 250 - 500 °C

• Average SCR Temperature 250 - 500 °C

• Outlet SCR Temperature 250 - 500 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P2201, P229F, P242B, P0421, P0402, P0401, P225C, P225E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

30 seconds

45

Group 28 P0420 NOx Catalyst: Missing SCR

P0420 NOx Catalyst: Missing SCR

DTC P0420

Component /
System

NOx Catalyst - Missing SCR

Monitor Strategy
Description

Fault Limit Calculated NOx conversion efficiency DOC temperature rate of change < 66%

Enable Conditions

Missing Substrate

• Engine Speed 1400 - 1800 RPM

• Exhaust Mass Flow > 0.33 kg/s

• System Out NOx Flow > 0.05 g/s

• Inlet SCR Temperature 250 - 500 °C

• Average SCR Temperature 250 - 500 °C

• Outlet SCR Temperature 250 - 500 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P2201, P229F, P242B, P0421, P0402, P0401, P225C, P225E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

30 seconds

46

Group 28 NOx Catalyst: Reductant Delivery Emission Threshold

NOx Catalyst: Reductant Delivery Emission Threshold

A faulty DEF delivery system operation will impact the NOx
emissions and subsequently a low DEF efficiency will be

detected. The fault separation from conversion efficiency is
achieved by using an aftermarket/service routine.

P0420 NOx Catalyst: Reductant Delivery Performance

DTC P0420

Component /
System

Monitor Strategy
Description

Fault Limit Calculated NOx conversion efficiency DOC temperature rate of change < 66%

Enable Conditions

NOx Catalyst - Reductant Delivery Performance

Low NOx conversion efficiency

• Engine Speed 1400 - 1800 RPM

• Exhaust Mass Flow > 0.33 kg/s

• System Out NOx Flow > 0.05 g/s

• Inlet SCR Temperature 250 - 500 °C

• Average SCR Temperature 250 - 500 °C

• Outlet SCR Temperature 250 - 500 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P2201, P229F, P242B, P0421, P0402, P0401, P225C, P225E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

30 seconds

47

Group 28 NOx Catalyst: Feedback: Slow/Fails to Enter: Default CL

NOx Catalyst: Feedback: Slow/Fails to Enter: Default CL

This diagnostic function indicates if the DEF feedback control is
saturated against a high or low limit. The logic for this diagnostic
evaluates the time spent at saturation and compares the ratio

between the time spent in a saturation mode and the total time
with the engine running. A fault is reported whenever the ratio
exceeds a fault limit.

P249D NOx Catalyst: Feedback Control (Saturated Low Monitor)

DTC P249D

Component /
System

Monitor Strategy
Description

Fault Limit Time spent saturated low > 240 seconds

Enable Conditions

NOx Catalyst - Feedback Control (Saturated Low Monitor)

Evaluates the time spent in Saturation Low Mode

• Engine Speed > 500 RPM

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

300 seconds

Probable Causes See Tech Tool

P249E NOx Catalyst: Feedback Control (Saturated High Monitor)

DTC P249E

Component /
System

Monitor Strategy
Description

Fault Limit Time spent saturated high > 240 seconds

Enable Conditions

NOx Catalyst Feedback Control (Saturated High Monitor)

Evaluates the time spent in Saturation High Mode

• Engine Speed > 500 RPM

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

300 seconds

48

Group 28

Particulate Matter (PM) Filter Monitoring: Filter Emission

Particulate Matter (PM) Filter Monitoring: Filter Emission Threshold

Threshold

Failures that result in a reduction to the DPF’s filtration effi­ciency, such as cracked or melted filter, are monitored by com­paring the soot accumulation calculated by a physical DPF
delta Pressure (DPF dP) sensor based soot model (Pressure
Model) to the soot accumulation predicted by a chemical reac­tion based soot model (Chemical Model). If the filter has failed
in a way that results in a high level of PM in the exhaust gas,

P2002 PM Filter Efficiency Monitor

DTC P2002

Component /
System

Monitor
Strategy
Description

Fault Limit Low Soot Load Evaluation

Enable
Conditions

PM Filter - Filtering Performance

Modeled vs Measured filtration efficiency.

High Soot Load Evaluation

Delta = Delta pressure based soot
load reference soot load > 3g/L

Low Soot Load Evaluation

• Chemical Soot Load < 0.35 g/L

• Ambient Air Temperature -8 - 55

°C

• Barometric Pressure 75 - 105

kPa

• Coolant Temperature > 65 °C

Ratio = Chemical based soot mode
ldelta pressure based soot model <
50%

High Soot Load Evaluation

• Chemical Soot Load > 0.55 g/L

• Ambient Air Temperature -8 - 55

• Barometric Pressure 75 - 105

• Coolant Temperature > 65 °C

°C

kPa

the calculated soot load in the filter after an amount of time will
be lower than the level calculated by the Chemical Model. A
failure of the DPF that results in an increased DPF dP level,
such as a melted substrate, can also be identified, as the higher
DPF dP will result in a pressure model that reports a much high­er level of soot than the chemical model.

Temperature Evaluation

Post DPF Temperature >725 °C

Temperature Evaluation

N/A

Disable
Conditions

Time Re­quired For
DTC To Be
Set

MIL
Illumination

Probable
Causes

No Active DTC's:

• P2453, P244A, P2080, P2084, P242B

Low Soot Load Evaluation

60 seconds

2 Drive Cycles

See Tech Tool

High Soot Load Evaluation

200 seconds

Temperature Evaluation

N/A

49

Group 28 PM Filter: Missing Substrate Functional

PM Filter: Missing Substrate Functional

The Diesel Particulate Filter is constructed from a porous ce­ramic substrate coated in precious metals. The porous nature
of the DPF results in a certain level of differential pressure
(DPF dP) between the inlet and outlet of the DPF, dependant
on the exhaust mass flow, the temperature at the inlet of the
DPF, and the temperature at the outlet of the DPF. If the DPF
substrate has been completely removed, the DPF dP will be

close to zero. By comparing the measured DPF dP to a mod­eled DPF dP at operating conditions where the difference
should be large, an evaluation on the presence of the filter can
be made. If the DPF dP is below a certain threshold during the
evaluation conditions, the filter substrate can be assumed to be
missing.

P244A PM Filter: Missing Substrate

DTC P244A

Component /
System

Monitor Strategy
Description

Fault Limit Ratio = Measured modeled DPF delta pressure < 63%

Enable Conditions

PM Filter - Missing Substrate

Compare modeled DPF pressure to actual

• Engine Speed 1225 - 1725 RPM

• Engine Torque > 1700 Nm

• Exhaust Mass Flow 0.3 - 0.5 kg/s

• Modeled DPF Delta Pressure 3 15 kPa

• DOC Out Temperature 300 - 400 °C

• DPF Out Temperature 300 - 400 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P2226, P2229, P0110, P0112, P0115, P0117, P20DD, P20E0, P229E, P2200, P0105, P0108,

P2031, P2322, P2084, P242C, P242A, P242B, P0545, P0544, P2080, P1130, P1133, P20DC,
P20D0, P20CF

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

7 seconds

50

Group 28 NOx Sensor #1: Emission Threshold

NOx Sensor #1: Emission Threshold

In addition to the circuitry monitors, the two NOx sensors are
subjected to plausibility checks as part of the NOx sensor diag­nostics. The two NOx sensors are monitored to ensure that they
are capable of accurately evaluating the NOx exhaust emis­sions and that they can be used by the engine emissions con­trol strategies.

P2201 NOx Sensor #1: Rationality Monitor

DTC P2201

Component /
System

NOx Sensor #1 - Plausibilty

Inlet NOx Sensor

The NOx sensor located upstream of the NOx converting cata­lyst is rationalized against a calculated NOx value. The NOx
sensor is considered faulty whenever the difference between
the NOx sensor value and the calculated NOx value is greater
than the threshold.

Monitor Strategy
Description

Fault Limit Delta = Engine modeled NOx flow - NOx sensor based NOx flow < -20%

Enable Conditions

Sensor Rationality Check

• Engine Speed 1120 - 1620 RPM

• Modeled NOx Fllow > 0.15 g/s

• Engine Torque 1300 - 2000 Nm

• Ambient Air Temperature -7 - 40 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 70 °C

• Engine Speed Stability -10 to 10 RPM

• Torque Stability -15 to 15 RPM

• EGR Control Stability -1.5% to 1.5%

Disable Conditions

No Active DTC's:

• P0401, P0402, P0400, P0402, P225D, P225F, P242A, P0421, P221A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

3 seconds

51

Group 28 P225C Inlet and Outlet NOx Sensor Stuck High

P225C Inlet and Outlet NOx Sensor Stuck High

The monitor is performed during no fueling (motoring) condi­tions where the expected amount of exhaust NOx concentration

DTC P225C

Component /
System

Monitor Strategy
Description

Fault Limit NOx sensor value > 200 PPM

Enable Conditions

NOx Sensor #1 - Rationality High

Rationality High

• Fueling Amount < 0.001 g/sec

• Engine Torque < 1000 Nm

Disable Conditions

No Active DTC's:

• P225D, P0400, P0402, P225F, P242A, P0421, P221A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

is nearly zero. A fault condition is logged whenever the NOx
sensor read value is above a limit value during no fueling.

52

Group 28 NOx Sensor #1: Heater Performance

NOx Sensor #1: Heater Performance

This OBD monitor is designed to detect faulty startup behavior.
The function monitors the time from enable command sent to

P220E NOx Sensor #1: Sensor Start Up Monitor

DTC P220E

Component /
System

NOx Sensor #1 - Sensor Start

the time when the sensor reports full readiness. If the time is
greater than the fault limit a DTC is set.

Monitor Strategy
Description

Fault Limit Time for start up > 600 seconds

Enable Conditions

Disable Conditions

Sensor start up

• Supply Voltage 11.5 - 16V

No Active DTC's:

• P2200, P2203, P220A, U029D

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

10 seconds

53

Group 28 NOx Sensor #1: Bad Device

NOx Sensor #1: Bad Device

This OBD Monitoris designed to to detect bad sensor quality.
The function monitors the time when the sensor reports bad
quality. If the time is greater than the fault limit a DTC is set.

P22FB NOx Sensor #1: Bad Device Monitor

DTC P22FB

Component /
System

NOx Sensor #1 - Sensor Voltage High

Monitor Strategy
Description

Fault Limit Signal not valid for a specified time interval > 5 seconds

Enable Conditions

Disable Conditions

Bad Device

• Engine Speed >550 RPM

No Active DTC's:

• P2200, P2203, P220A, U029D

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

54

Group 28 NOx Sensor #1: Circuit Monitors

NOx Sensor #1: Circuit Monitors

P2203 NOx Sensor #1: Short Circuit Low

DTC P2203

Component /
System

NOx #1 Sensor - Short Circuit

Monitor Strategy
Description

Fault Limit Time with short circuit bad quality > 5 seconds

Enable Conditions

NOx Sensor Short Circuit

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• U029D

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P2200 NOx Sensor #1: Open Circuit

DTC P2200

Component /
System

Monitor Strategy
Description

10 seconds

NOx Sensor #1 - Open Circuit

NOx Sensor Open Circuit

Fault Limit Time with open circuit bad quality > 5 seconds

Enable Conditions

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• U029D

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

55

Group 28 P220A NOx Sensor #1: Supply Voltage Out of Range

P220A NOx Sensor #1: Supply Voltage Out of Range

DTC P220A

Component /
System

NOx Sensor #1 - Sensor Voltage

Monitor Strategy
Description

Fault Limit Time with voltage out of range signal > 5 seconds

Enable Conditions

Disable Conditions

Sensor evaluation of supply voltage

• Engine Speed > 500 RPM

No Active DTC's:

• U029D

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

U029D NOx Sensor #1: Missing Signal

DTC U029D

Component /
System

Monitor Strategy
Description

Fault Limit Missing Signal No message for > 5 s

10 seconds

NOx Sensor - Missing Signal

Signal not recieved to ACM after key on

Enable Conditions

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

10 seconds

56

Group 28 NOx Sensor #2: Emission Threshold

NOx Sensor #2: Emission Threshold

The rationality check for this sensor consists of sensor stuck
low and stuck high check. It is performed whenever the engine
operates on highly transient conditions. A fault condition is

P229F NOx Sensor #2: Rationality Low Monitor

DTC P229F

Component /
System

NOx Sensor #2 - Plausibilty

reached whenever the NOx sensor values are below or above
a fault limit.

Monitor Strategy
Description

Fault Limit NOX Sensor rate of change < 0.7 ppm/sec

Enable Conditions

Sensor Rationality Check

• Engine Speed > 1200 RPM

• Average Catalyst Temperature 200 - 500 °C

• Engine Torque > 1800 Nm

• Ambient Air Temperature -7 - 40 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

• Filtered Torque Rise > 60 Nm

Disable Conditions

No Active DTC's:

• P225D, P0400, P0402, P225F, P242A, P0421, P225C, P2201, P221A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

300 seconds

57

Group 28 P225E NOx Sensor #2: Rationality High Monitor

P225E NOx Sensor #2: Rationality High Monitor

DTC P225E

Component /
System

NOx Sensor #2 - Rationality high

Monitor Strategy
Description

Fault Limit NOX Sensor Value > 125 ppm

Enable Conditions

Sensor Rationality Check

• Fueling Amount < 0.001 g/sec

• SCR Temperature 150 - 500 °C

• SCR Temperature Stability < 0.2 °C/sec

• Engine Torque < 1000 Nm

Disable Conditions

No Active DTC's:

• P225D, P0400, P0402, P225F, P242A, P0421, P2201, P225C, P221A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

58

Group 28 NOx Sensor #2: Heater Performance

NOx Sensor #2: Heater Performance

This OBD monitoris designed to detect faulty startup behavior.
The function monitors the time from enable command sent (ok
for sensor to heat itself since all water is considered to be
evaporated from the exhaust stream) to the time when the

P220F NOx Sensor #2: Sensor Start Up Monitor

DTC P220F

Component /
System

NOx #2 Sensor - Sensor Start

sensor reports full readiness. If the time is too long the sensor
does not fulfill the requirements. (Activating the NOx sensors in
an environment with water present, there is a risk the sensor el­ements will crack.)

Monitor Strategy
Description

Fault Limit Time evaluation > 600 seconds

Enable Conditions

Time to for sensor to report good quality

• Battery Voltage 11- 16V

• Engine Speed > 500 RPM

• Dew point trig Enabled (ECT start delay and dew point calculation delay)

Disable Conditions

No Active DTC's:

• P2200, P2203, P220A, U029E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

10 seconds

59

Group 28 NOx Sensor #2: Bad Device

NOx Sensor #2: Bad Device

This OBD Monitoris designed to to detect bad sensor quality.

The quality flag from the NOx sensor is monitored. Too long du­ration of not reliable sensor signal quality is considered as an
error. When the NOx sensor is unable to maintain a reliable

P22FE NOx Sensor #2: Bad Device Monitor

DTC P22FE

Component /
System

NOx Sensor #2 - Sensor Voltage High

output, its signal quality will be set to not reliable. This can e.g.
be the case during fast transients and fast variations in NOx
Sensor measurement value. This monitor will not run until the
start-up monitor is successfully completed.

Monitor Strategy
Description

Fault Limit Signal not valid for a specified time interval > 5 seconds

Enable Conditions

Bad Device

• Engine Speed >550 RPM

• Battery Voltage 11 - 16 V

Disable Conditions

No Active DTC's:

• P2200, P2203, P220A, U029E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

10 seconds

60

Group 28 NOx Sensor #2: NOx Sensor Measurement Monitor

NOx Sensor #2: NOx Sensor Measurement Monitor

This OBD monitor consists of a NOx Sensor Measurement val­ue comparison between the two NOx sensors. The fault

P221A NOx Sensors: NOx Sensor Measurement Rationality Monitor

DTC P221A

Component /
System

NOx Sensors - NOx Sensor Measurement

condition is reached whenever the absolute difference between
the NOx Sensor Measurement values exceeds the threshold.

Monitor Strategy
Description

Fault Limit Absolute dference between Lambda IN and Lambda OUT greater than threshold evaluated 30 times >

Enable Conditions

Plausibility

1

• Engine Speed 1300-1900 RPM

• Engine Torque > 1000 Nm

• Ambient Air Temperature -7 - 40 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

• Engine Speed Stability -10 - 10 RPM

• Torque Stability -15 - 15 Nm

Disable Conditions

No Active DTC's:

• P0400, P0402, P225D, P225F, P242A, P0421, P2201, P225C, P221A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

0.6 seconds (30 sub evaluations. If 30 out of 30 evaluations are good => PASS, If 1 or more out of 30
evaluations is fail => FAIL)

61

Group 28 NOx Sensor #2: Circuit Monitors

NOx Sensor #2: Circuit Monitors

P22A1 NOx Sensor #2: Short Circuit Low

DTC P22A1

Component /
System

NOx #2 Sensor - Short Circuit

Monitor Strategy
Description

Fault Limit Time with bad signal quality > 5 seconds

Enable Conditions

NOx Sensor Short Circuit

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• U029E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P229E NOx Sensor #2: Open Circuit

DTC P229E

Component /
System

Monitor Strategy
Description

10 seconds

NOx Sensor #2 - Open Circuit

NOx Sensor Open Circuit

Fault Limit Time with bad signal quality > 5 seconds

Enable Conditions

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• U029E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

10 seconds

62

Group 28 P220B NOx Sensor #2: Supply Voltage Out of Range

P220B NOx Sensor #2: Supply Voltage Out of Range

DTC P220B

Component /
System

NOx Sensor #2 - Sensor Voltage

Monitor Strategy
Description

Fault Limit Time with voltage out of range signal > 5 seconds

Enable Conditions

Disable Conditions

Sensor evaluation of supply voltage

• Key On > Active

No Active DTC's:

• U029E

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

U029E NOx Sensor #2: Missing Signal

DTC U029E

Component /
System

Monitor Strategy
Description

Fault Limit Missing Signal No message for > 5 s

10 seconds

NOx Sensor #2 - Missing Signal

Signal not recieved to ACM after key on

Enable Conditions

• Key On Active

• Battery Voltage > 8V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

63

Group 28

Engine Cooling System: Time To Reach Threshold

Engine Cooling System: Time To Reach Threshold Temperature

Temperature

This OBD monitor evaluates the coolant thermostat. If the cool­ant temperature sensor value doesn’t reach the threshold or if

the temperature decreases below the threshold during opera­tion the thermostat is judged as faulty and a DTC is set.

P0128 Engine Cooling System: Stuck Open or Leaking Thermostat Monitor

DTC P0128

Component /
System

Monitor Strategy
Description

Fault Limit Coolant temperature threshold < 72°C

Enable Conditions

Engine Cooling System - Thermostat failure

Stuck open or leaking thermostat

• Engine Speed 1000 - 1600 RPM

• Engine Torque 550 - 1200 Nm

• Vehicle Speed > 40 km/h

• Ambient Air Temperature -15 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature at Start < 72 °C

Disable Conditions

No Active DTC's:

• P0112, P0110, P0117, P0115, P0116, P0339, P0335, P0336, P2226, P2227, P2229

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Ambient air temperature dependent (ambient air temperature multiplied with a warm up delay time to
get total warm up time)

64

Group 28

Engine Coolant Temperature Sensor (ECT): Rationality

Engine Coolant Temperature Sensor (ECT): Rationality Monitor

P0116 Engine Coolant Temperature Sensor (ECT): Sensor Stuck Low Monitor

DTC P0116

Component /
System

Engine Coolant Temperature Sensor - ECT Stuck Low Monitor

Monitor

Monitor Strategy
Description

Fault Limit Delta = Coolant temperature sensor value - estimated coolant temperature > 3 °C

Enable Conditions

ECT Stuck Below the Highest Minimum Enable Temperature

• Engine Speed 1000 - 1400 RPM

• Engine Torque 1000 - 1400

• Vehicle Speed > 40 km/h

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature < 65 °C

• Open Thermostat evaluated True

Disable Conditions

No Active DTC's:

• P0112, P0110, P0117, P0115, P0116, P0339, P0335, P0336, P2226, P2227, P2229

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

6 seconds

65

Group 28 Engine Coolant Temperature Sensor (ECT): Circuit Monitors

Engine Coolant Temperature Sensor (ECT): Circuit Monitors

The engine coolant temperature sensor is checked for open cir­cuit, short circuit, or out-of-range value by monitoring the ana­log-to-digital (A/D) input voltage.

P0115 Engine Coolant Temperature Sensor (ECT): Open Circuit Check

DTC P0115

Component /
System

ECT - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 4.87 V (-40 °C)

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0117 Engine Coolant Temperature Sensor (ECT): Short Circuit Low

DTC P0117

Component /
System

Monitor Strategy
Description

5 seconds

ECT - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.2767 V (140 °C)

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

66

5 seconds

Group 28 Crankcase Ventilation System: Disconnection

Crankcase Ventilation System: Disconnection

This OBD monitor diagnoses the crankcase ventilation system
by looking at the crankcase pressure sensor value. By compar­ing the crankcase - to ambient pressure at two different states,
one where the speed of the CCV separator is “HIGH” and the
second where the speed of the CCV separator is “LOW”. The
upper and lower limits for the crankcase pressure are
established.

The separator malfunction is detected when CCV separator im­peller (shaft) sticks (does not spin) resulting in a pressure
above the upper limit.

The disconnected pipe malfunction is detected when the venti­lator tube from the valve cover to the separator device is dis­connected resulting in a pressure below the lower limit.

Both of these malfunctions will result in a DTC being set.

P04DB Crankcase Ventilation: Disconnected Pipe/Separator Monitor

DTC P04DB

Component /
System

Monitor Strategy
Description

Fault Limit

Enable Conditions High Speed Conditions

Crankcase Ventilation - Disconnect

Disconnected ventilation hose or faulty separator unit.

Delta = (Delta Pressure High) - (Delta Presure Low); (Absolute Value) < 0.15 kPa

Delta Pressure = (Crankcase Pressure) - (Barometric Pressure)

Low Speed Conditions

• Oil Temperature > 30 °C

• Engine Run Time > 700s

• Oil Pressure 375 - 800 kPa

• Engine Torque > 95 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

• Oil Temperature > 30 °C

• Engine Run Time > 700s

• Oil Pressure 100 - 280 kPa

• Engine Torque < 380 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P01BB, P01B9, P0112, P2229, P051A, P051C, P051D, P051B, P0523, P0520

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

18 seconds

67

Group 28 Barometric Pressure Sensor (BPS): Rationality Monitor

Barometric Pressure Sensor (BPS): Rationality Monitor

This OBD rationality monitor for the Barometric Pressure sen­sor evaluates the plausibility of the sensor comparing the Baro­metric, Intake Air and Crankcase pressure sensor values.

This evaluation is performed in two scenarios:

Pre Cranking:

A comparison of pressures from all sensors is made. The small­est difference between the three is determined and a reference
pressure is calculated. The Barometric pressure sensor value

is compared to the reference value and if the difference is
above the threshold a DTC is reported.

Engine running:

The engine running sensor evaluation is similar to the Pre
Cranking sensor evaluation. The enable conditions are defined
when the vehicle is typically at idle when Intake Air and Crank­case pressure are similar to Barometric pressure.

P2227 Barometric Pressure Sensor (BPS): Rationality Monitor

DTC P2227

Component /
System

Monitor Strategy
Description

Fault Limit Delta = Barometric pressure - reference pressure > 10kPa

Enable Conditions Engine Pre-Crank

BPS Rationality

Barometric pressure sensor evaluation

• Key On Active

• Battery Voltage > 8 V

Engine Running

• Engine Speed 450 - 750 RPM

• Engine Torque 100 - 400 Nm

Disable Conditions

No Active DTC's:

• P2226, P2227, P2229, P051A, P051B, P051C, P051D, P2578

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

8 seconds

68

Group 28 Barometric Pressure Sensor (BPS): Circuit Monitors

Barometric Pressure Sensor (BPS): Circuit Monitors

The Barometric Pressure Sensor is checked for electrical fail­ures by monitoring the analog-to-digital (A/D) input voltage.

P2226 Barometric Pressure Sensor (BPS): Open Circuit Check

DTC P2226

Component /
System

BPS Open

Monitor Strategy
Description

Fault Limit Sensor Voltage < 0.1 V (15 kPa)

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P2229 Barometric Pressure Sensor (BPS): Short Circuit High

DTC P2229

Component /
System

Monitor Strategy
Description

5 seconds

BPS High

Short Circuit High

Fault Limit Sensor Voltage > 4.9 V (115 kPa)

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

69

Group 28 Intake Manifold Pressure Sensor (IMP): Rationality Monitor

Intake Manifold Pressure Sensor (IMP): Rationality Monitor

This OBD rationality monitor for the Intake Manifold Pressure
sensor evaluates the plausibility of the sensor comparing the
Barometric, Intake Air and Crankcase pressure sensor values.

This evaluation is performed in two scenarios:

Pre Cranking:

A comparison of pressures from all sensors is made. The small­est difference between the three is determined and a reference
pressure is calculated. The Intake Manifold pressure sensor

value is compared to the reference value and if the difference is
above the threshold a DTC is reported.

Engine Running:

The engine running sensor evaluation is similar to the Pre
Cranking sensor evaluation. The enable conditions are defined
when the vehicle is typically at idle when Barometric and Crank­case pressure are similar to Intake Manifold pressure.

P0069 Intake Manifold Pressure Sensor Monitor

DTC P0069

Component /
System

Monitor Strategy
Description

Fault Limit Delta = Intake manifold pressure reference pressure > 10kPa

Enable Conditions Engine PreCrank

IMP Rationality

Intake manifold pressure sensor evaluation

• Key On Active

• Battery Voltage > 8 V

Engine Running

• Engine Speed 450 - 750 RPM

• Engine Torque 100 - 400 Nm

Disable Conditions

No Active DTC's:

• P2226, P2227, P2229, P051A, P051B, P051C, P051D, P2578

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

8 seconds

70

Group 28 Intake Manifold Pressure Sensor (IMP): Circuit Monitors

Intake Manifold Pressure Sensor (IMP): Circuit Monitors

The Intake Manifold Pressure Sensor is located in the inlet
manifold and the sensor is checked for electrical failures by
monitoring the analog-to-digital (A/D) input voltage.

P0105 Intake Manifold Pressure Sensor (IMP): Open Circuit Check

DTC P0105

Component /
System

IMP Open

Monitor Strategy
Description

Fault Limit Sensor Voltage < 0.3 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0108 Intake Manifold Pressure Sensor (IMP): Short Circuit High

DTC P0108

Component /
System

Monitor Strategy
Description

Continuous

IMP High

Short Circuit High

Fault Limit Sensor Voltage > 4.9 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

71

Group 28

Aftertreatment Differential Pressure Sensor (DPS): Rationality

Aftertreatment Differential Pressure Sensor (DPS): Rationality Monitor

Monitor

This OBD monitor diagnoses the DPF differential pressure sen­sor, by monitoring the deviation between estimated DPF differ­ential pressure and the measured DPF differential pressure
value.

There are two independent tests that evaluate the differential
pressure sensor plausibility:

Low Flow Condition:

When the engine is in idle or in low engine speed and torque
condition, the differential pressure over the DPF is expected to

be close to zero. If the differential pressure exceeds a threshold
then the differential pressure sensor plausibility DTC is set.

High Flow Condition:

When the engine is in higher engine speed and torque condi­tion, the differential pressure over the DPF is expected to rise
according to engine speed and torque. If the differential pres­sure exceeds a threshold then the differential pressure sensor
plausibility DTC is set.

P2453 Aftertreatment Differential Pressure Sensor (DPS): DPS Differential
Pressure Sensor

DTC P2453

Component /
System

Monitor Strategy
Description

Fault Limit Low Condition

Enable Conditions Low Condition

DPS - Plausibility

Rationality high and low

Measured DPF Delta Pressure in Low Pressure
Conditions > 1.5 kPa

• Engine Speed < 750 RPM

• Engine Torque < 300 Nm

• Modeled DPF delta Pressure < 1.5 kPa

• DOC Out Temperature 15 - 275 °C

• DPF Out Temperature 15 - 275 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

High Condition

Measured DPF Delta Pressure in High pressure
Conditions < 2.5 kPa

High Condition

• Engine Speed 1400 - 1900 RPM

• Engine Torque > 4.5 kPa

• Modeled DPF delta Pressure < 1.5 kPa

• DOC Out Temperature > 325 °C

• DPF Out Temperature > 325 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P2226, P2229, P0110, P0112, P0115, P0117, P20DD, P20E0, P229E, P2200, P0105, P0108,

P2031: P2322: P2084, P242C, P242A, P242B P0545, P0544, P2080, P1130, P1133, P20DC,
P20D0, P20CF

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

72

Low Condition

15 seconds

High Condition

8 seconds

Group 28

Aftertreatment Differential Pressure Sensor (DPS): Circuit

Aftertreatment Differential Pressure Sensor (DPS): Circuit Monitors

The Aftertreatment Differential Pressure Sensor is checked for
electrical failures by monitoring the analog-to-digital (A/D) input
voltage.

P2452 Aftertreatment Differential Pressure Sensor (DPS): Open Circuit Check

DTC P2452

Component /
System

DPF - Open

Monitors

Monitor Strategy
Description

Fault Limit Sensor Voltage > 4.8 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P2454 Aftertreatment Differential Pressure Sensor (DPS): Short Circuit Low

DTC P2454

Component /
System

Monitor Strategy
Description

5 seconds

DPS - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

73

Group 28 EGR Differential Pressure Sensor: Rationality Monitor

EGR Differential Pressure Sensor: Rationality Monitor

This OBD monitor diagnoses the EGR differential pressure
sensor.

There are two methods for monitoring the EGR differential pres­sure sensor:

Normal Flow Condition:

This monitors the deviation between estimated EGR differential
pressure and the measured EGR differential pressure value.

Zero Flow Condition:

This monitors when the EGR differential pressure is supposed
to be zero when the EGR valve closed.

P046C EGR Differential Pressure Sensor: DP Sensor Rationality

DTC P046C

Component /
System

Monitor Strategy
Description

Fault Limit Plausibility

Enable Conditions Plausibility

DP Sensor Rationality

Compare actual vs estimated EGR delta pressure

Actual EGR delta pressure - estimated EGR delta
pressure Low High
Low < -20 kPa
High > 20 kPa

• Engine Speed 1100 - 1800 RPM

• Engine Torque > 1600 Nm

Zero

EGR delta Pressure
Low < -2 kPa
High > 3 kPa

Zero

• Engine Speed 0 - 1500 RPM

• EGR Position < 0.1%

• EGR Position > 5%

• VGT Position 40 - 92%

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Plausibility

30 seconds

Zero

3 seconds

74

Group 28 EGR Differential Pressure Sensor: Circuit Monitors

EGR Differential Pressure Sensor: Circuit Monitors

The EGR Differential Pressure Sensor is checked for electrical
failures by monitoring the analog-to-digital (A/D) input voltage.

P0409 EGR Differential Pressure Sensor: Open Circuit Check

DTC P0409

Component /
System

DP Sensor - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0406 EGR Differential Pressure Sensor: Short Circuit High

DTC P0406

Component /
System

Monitor Strategy
Description

5 seconds

DP Sensor - High

Short Circuit High

Fault Limit Sensor Voltage > 4.8 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

75

Group 28 Crankcase Pressure Sensor (CPS): Rationality Monitor

Crankcase Pressure Sensor (CPS): Rationality Monitor

This OBD rationality monitor for the Crankcase Pressure sensor
evaluates the plausibility of the sensor comparing the Baromet­ric, Intake Air and Crankcase pressure sensor values.

This evaluation is performed in two scenarios:

Engine Pre-Cranking:

A comparison of pressures from all sensors is made. The small­est difference between the three is determined and a reference
pressure is calculated. The Crankcase pressure sensor value is

compared to the reference value and if the difference is above
the threshold a DTC is reported.

Engine Running:

The engine running sensor evaluation is similar to the Pre
Cranking sensor evaluation. The enable conditions are defined
when the vehicle is typically at idle when Barometric and Crank­case pressure are similar to Intake Manifold pressure.

P051B Crankcase Pressure Sensor (CPS): Rationality Monitor

DTC P051B

Component /
System

Monitor Strategy
Description

Fault Limit Delta = Crankcase pressure reference pressure > 10 kPa

Enable Conditions Engine Pre-Cranking

CPS - Rationality

Crankcase Pressure Sensor evaluation

• Key On Active

• Battery Voltage > 8 V

Engine Running

• Engine Speed 450 - 750 RPM

• Engine Torque 100 - 400 Nm

Disable Conditions

No Active DTC's:

• P2226, P2227, P2229, P051A, P051C, P051D, P2578, P0105, P010

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

4 seconds

76

Group 28 Crankcase Pressure Sensor (CPS): Circuit Monitors

Crankcase Pressure Sensor (CPS): Circuit Monitors

The Crankcase Pressure Sensor is checked for electrical fail­ures by monitoring the analog-to-digital (A/D) input voltage.

P051A Crankcase Pressure Sensor (CPS): Open Circuit Check

DTC P051A

Component /
System

CPS - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage < 0.3 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P051D Crankcase Pressure Sensor (CPS): Short Circuit High

DTC P051D

Component /
System

Monitor Strategy
Description

5 seconds

CPS - High

Short Circuit High

Fault Limit Sensor Voltage > 4.9 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

77

Group 28

Intake Manifold Temperature Sensor (IMT): Rationality

Intake Manifold Temperature Sensor (IMT): Rationality Monitor

Monitor

The Intake Manifold Temperature Sensor is monitored by com­paring it with a calculated Intake Manifold temperature based
on intake manifold pressure and ambient air temperature.

When the evaluation time has elapsed the average difference is
compared to an upper and a lower limit resulting in a low tem­perature and high temperature fault.

P009A Intake Manifold Temperature Sensor (IMT): Rationality Monitor

DTC P009A

Component /
System

Monitor Strategy
Description

Fault Limit Delta = Intake manifold temperature - reference temperature > 18 C

Enable Conditions

IMT - Rationality

Intake Manifold Temperature Sensor Evaluation

• Engine Speed 450 - 750 RPM

• Engine Torque 100 - 400 Nm

Disable Conditions

No Active DTC's:

• P0110, P0112, P2226, P2229, P040C, P040A, P2578

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

10 seconds

Probable Causes See Tech Tool

78

Group 28 Intake Manifold Temperature Sensor (IMT): Circuit Monitors

Intake Manifold Temperature Sensor (IMT): Circuit Monitors

The Intake Manifold Temperature sensor is checked for electri­cal failures by monitoring the analog-to-digital (A/D) input
voltage.

P0110 Intake Manifold Temperature Sensor (IMT): Open Circuit Check

DTC P0110

Component /
System

IMT - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 4.9 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0112 Intake Manifold Temperature Sensor (IMT): Short Circuit Low

DTC P0112

Component /
System

Monitor Strategy
Description

Continuous

IMT - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.1 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

79

Group 28 EGR Temperature Sensor: Rationality Monitor

EGR Temperature Sensor: Rationality Monitor

This OBD monitor evaluates the rationality of the EGR tempera­ture sensor.

The monitor compares the EGR temperature with the coolant
temperature during conditions where they should read the
same temperature.

P040B EGR Temperature Sensor: Rationality Monitor

DTC P040B

Component /
System

Monitor Strategy
Description

Fault Limit Delta = EGR temperature - Coolant temperature < - 40 °C or > 80 °C

Enable Conditions Stuck Low

EGR Temperature Sensor - Rationality

EGR Temperature Sensor evaluation

• Engine Speed 1000 - 1600 RPM

• Engine Torque < 1200 Nm

Stuck High

• Engine Speed 1200 - 2000 RPM

• EGR Mass Flow > 0.1 kg/s

• EGR Mass Flow < 0.08 kg/s

Disable Conditions

No Active DTC's:

• P040A, P040C

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

30 seconds

Probable Causes See Tech Tool

80

Group 28 EGR Temperature Sensor: Circuit Monitors

EGR Temperature Sensor: Circuit Monitors

The EGR Temperature Sensor is checked for electrical failures
by monitoring the analog-to-digital (A/D) input voltage.

P040A EGR Temperature Sensor: Open Circuit Check

DTC P040A

Component /
System

EGR Temperature Sensor - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 4.8 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P040C EGR Temperature Sensor: Short Circuit Low

DTC P040C

Component /
System

Monitor Strategy
Description

5 seconds

EGR Temperature Sensor - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.1 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

81

Group 28 Exhaust Gas Temperature Sensors: Rationality Monitors

Exhaust Gas Temperature Sensors: Rationality Monitors

The exhaust gas system has three temperature sensors. The
pre-DOC sensor measures the engine exhaust gas tempera­ture, the post-DOC sensor measures the temperature down­stream of the DOC, and the post-DPF sensor measures the
temperature downstream of the DPF.

The rationality monitor for the exhaust temperature sensors
evaluates the plausibility of the sensor comparing the pre-DOC,
DOC outlet and DPF outlet temperature sensor values.

During normal driving conditions, the temperature of the DOC
outlet and the DPF outlet is very close to the engine exhaust
gas temperature (pre-DOC). This difference is integrated over a
period of time.

The average of the three sensors is determined and a reference
temperature is calculated. The temperature sensor values are
compared to the reference value and if the difference is above
the threshold a DTC is reported.

P2080 Exhaust Gas Temperature Sensors: Pre-DOC Rationality Check

DTC P2080

Component /
System

Monitor Strategy
Description

Fault Limit Average Exhaust Gas Temperature deviation > 70 °C

Enable Conditions

Pre-DOC Temperature Sensor - Rationality

Rationality check of the sensor

• Modeled Exhaust Temperature < 15 °C

• Modeled DOC Temperature - DPF Temperature < 15 °C

• Modeled DPF Temperature - Exhaust Temperature < 15 °C

• Engine Torque > 800 Nm

• ModeledEngine Exhaust Temperature 250 - 475 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure < 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P242C, P242A, P2032, P2031, P0544, P0545

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

45 seconds (accumulated time)

82

Group 28

P2084 Exhaust Gas Temperature Sensor: Post-DOC Ration-

P2084 Exhaust Gas Temperature Sensor: Post-DOC Rationality Check

DTC P2084

Component /
System

Post-DOC Temperature Sensor - Rationality

ality Check

Monitor Strategy
Description

Fault Limit Average DOC temperature deviation > 65 °C

Enable Conditions

Plausibility check of the sensor value

• Exhaust Temperature < 15 °C

• DOC Temperature - DPF Temperature < 15 °C

• DPF Temperature - Exhaust Temperature < 15 °C

• Engine Torque > 800 Nm

• Engine Exhaust Temperature 250 - 475 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure < 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P242C, P242A, P2032, P2031, P0544, P0545

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

45 seconds

83

Group 28

P242B Exhaust Gas Temperature Sensors: Post-DPF Ration-

P242B Exhaust Gas Temperature Sensors: Post-DPF Rationality Check

DTC P242B

Component /
System

Post-DPF Temperature Sensor - Rationality

ality Check

Monitor Strategy
Description

Fault Limit Average DPF temperature deviation > 70 °C

Enable Conditions

Plausibility check of the sensor value

• Modeled Exhaust Temperature < 15 °C

• Modeled DOC Temperature - DPF Temperature < 15 °C

• Modeled DPF Temperature - Exhaust Temperature < 15 °C

• Engine Torque > 800 Nm

• Modeled Engine Exhaust Temperature 250 - 475 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure < 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P242C, P242A, P2032, P2031, P0544, P0545

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

45 seconds

84

Group 28 Exhaust Gas Temperature Sensors: Circuit Monitors

Exhaust Gas Temperature Sensors: Circuit Monitors

The Exhaust Gas Temperature Sensor circuits are monitored to
check for electrical failures by monitoring the analog-to-digital
(A/D) input voltages.

P0544 Pre-DOC Temperature Sensor: Open Circuit Check

DTC P0544

Component /
System

Pre-DOC Temperature Sensor - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 2.3 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0545 Pre-DOC Temperature Sensor: Short Circuit Low

DTC P0545

Component /
System

Monitor Strategy
Description

5 seconds

Pre-DOC Temperature Sensor - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

85

Group 28 P2031 Post-DOC Temperature Sensor: Open Circuit Check

P2031 Post-DOC Temperature Sensor: Open Circuit Check

DTC P2031

Component /
System

Post-DOC Temperature Sensor - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 2.3 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P2032 Post-DOC Temperature Sensor: Short Circuit Low

DTC P2032

Component /
System

Monitor Strategy
Description

Continuous

Post-DOC Temperature Sensor - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

86

Group 28 P242A Post-DPF Temperature Sensor: Open Circuit Check

P242A Post-DPF Temperature Sensor: Open Circuit Check

DTC P242A

Component /
System

Post-DPF Temperature Sensor - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage > 2.3 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P242C Post-DPF Temperature Sensor: Short Circuit Low

DTC P242C

Component /
System

Monitor Strategy
Description

5 seconds

Post-DPF Temperature Sensor - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

87

Group 28 Engine Oil Temperature Sensor

Engine Oil Temperature Sensor

The oil temperature sensor monitor is designed to detect a sen­sor that is reporting an unrealistic oil temperature value.

P0196 Engine Oil Temperature Sensor (OTS): Rationality Monitor

DTC P0196

Component /
System

OTS - Rationality

Monitor Strategy
Description

Fault Limit Oil Temperature ≤ 39 °C

Enable Conditions

Disable Conditions

Plausibility check of the sensor by checking if the temperature rises fast enough.

• Indicated torque ≥ 800 Nm

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Ambient air temperature dependent

88

Group 28 Engine Oil Temperature Sensor: Circuit Monitors

Engine Oil Temperature Sensor: Circuit Monitors

The Engine Oil Temperature Sensor circuits are monitored to
check for electrical failures by monitoring the analog-to-digital
(A/D) input voltages.

P0195 Engine Oil Temperature Sensor (OTS): Open Circuit Check

DTC P0195

Component /
System

OTS - High

Monitor Strategy
Description

Fault Limit Sensor Voltage > 4.9 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0197 Engine Oil Temperature Sensor (OTS): Short Circuit Low

DTC P0197

Component /
System

Monitor Strategy
Description

5 seconds

OTS - Low

Short Circuit Low

Fault Limit Sensor Voltage < 0.1 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

89

Group 28 Engine Oil Pressure Sensor (OPS): Rationality Monitor

Engine Oil Pressure Sensor (OPS): Rationality Monitor

This OBD monitor is designed to detect a sensor that is report­ing an unrealistic value.

Engine oil pressure is checked during two conditions:

Engine Pre-Cranking:

When the engine is in the Pre-Cranking state, the Engine Oil
Pressure is expected to be in a respectively low range, close to
ambient pressure. If this range is exceeded, a Pre-Crank DTC
is set.

High Pressure Condition:

Another engine operating area is defined for high engine oil
pressure. A plausible oil pressure is expected to be within a
calibrated range, based on engine speed and torque. When the
engine is being operated within this high area, the expected oil
pressure is compared to the measured oil pressure and the dif­ference is averaged during the test execution time. If the aver­aged difference is greater than a calibrated threshold, this
plausibility monitor will assert the sensor plausibility DTC.

P0521 Engine Oil Pressure Sensor: Rationality Monitor

DTC P0521

Component /
System

Monitor Strategy
Description

Fault Limit Low Check

Enable Conditions Low Check

OPS - Rationality

Plausibility check of the sensor by comparing a high oil pressure condition to a low pressure condition.

High Check

Oil pressure outside range 0 - 120 kPa

• Engine Speed 1600 - 1850 RPM

• Engine Torque 0 - 300 Nm

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Oil pressure outside range 280 - 600 kPa

High Check

• Engine Speed Delta 30 RPM

• Engine Speed 1000 - 1300 RPM

• Engine Torque 0 - 300 Nm

• Engine Oil Temperature 80 - 120 °C

• Ambient Air Temperature -8 - 55 °C

• Barometric Pressure 75 - 105 kPa

• Coolant Temperature > 65 °C

Disable Conditions

No Active DTC's:

• P0520, P0523, P0195, P0197

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

100 seconds

90

Group 28 Engine Oil Pressure Sensor: Circuit Monitors

Engine Oil Pressure Sensor: Circuit Monitors

The Engine Oil Pressure Sensor circuits are monitored to check
for electrical failures by monitoring the analog-to-digital (A/D) in­put voltages.

P0520 Engine Oil Pressure Sensor (OPS): Open Circuit Check

DTC P0520

Component /
System

OPS - Open

Monitor Strategy
Description

Fault Limit Sensor Voltage < 0.2 V

Enable Conditions

Open Circuit

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0523 Engine Oil Pressure Sensor (OPS): Short Circuit High

DTC P0523

Component /
System

Monitor Strategy
Description

Continuous

OPS - High

Short Circuit High

Fault Limit Sensor Voltage > 4.9 V

Enable Conditions

• Key On Active

• Battery Voltage > 8 V

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

Continuous

91

Group 28 Turbocharger Speed Sensor (TSS): Rationality Monitor

Turbocharger Speed Sensor (TSS): Rationality Monitor

This OBD monitor evaluates the turbo speed sensor for missing
signal and for rationality faults. The turbo speed is compared
during two working conditions, one when the turbo speed is
supposed to be low and another when the turbo speed is sup­posed to be high.

Low Flow Condition :

When the engine is in idle or in low engine speed and torque
condition, the expected Turbo Speed is expected to be low. If

the turbo speed exceeds a calibrated threshold, a low speed er­ror is set.

High Flow Condition :

When the engine is in higher engine speed and torque condi­tion, the expected Turbo Speed is expected to be high. If the
turbo speed lies below a calibrated threshold, a high speed er­ror is set.

P2581 Turbocharger Speed Sensor (TSS): Rationality High

DTC P2581

Component /
System

Monitor Strategy
Description

Fault Limit Average turbo speed ≥ 50 000 RPM

Enable Conditions

TSS - Rationality High

Input Rationality High

• Engine Speed 500 - 1000 RPM

• Engine Torque 0 - 200 Nm

Disable Conditions

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P2578 Turbocharger Speed Sensor (TSS): Missing Signal Monitor

DTC P2578

Component /
System

Monitor Strategy
Description

Fault Limit Average turbo speed ≤ 0 RPM

Enable Conditions

5 seconds

TSS - Missing Signal

Missing signal

• Engine Speed 500 - 2000 RPM

• Engine Torque > 200 Nm

Disable Conditions

No Active DTC's:

• P2581

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

5 seconds

Probable Causes See Tech Tool

92

Group 28 Crankshaft Position Sensor: Rationality Monitors

Crankshaft Position Sensor: Rationality Monitors

The Crankshaft Position Sensor is monitored by comparing it’s
output signal to the output signal of the camshaft position
sensor.

P0335 Crankshaft Position Sensor: Open Circuit

DTC P0335

Component /
System

Crankshaft Position Sensor - Open

Monitor Strategy
Description

Fault Limit No signal from Crankshaft Speed Sensor No signal for number of revolutions greater than 3

Enable Conditions

Disable Conditions

Input Open Circuit

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0339 Crankshaft Position Sensor: Rationality Low

DTC P0339

Component /
System

Monitor Strategy
Description

Fault Limit Less crank teeth than expected Less crank teeth for number of revolutions greater than 3

5 seconds

Crankshaft Position Sensor - Rationality Low

Input Rationality - Low

Enable Conditions

Disable Conditions

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

93

Group 28 P0336 Crankshaft Position Sensor: Rationality High

P0336 Crankshaft Position Sensor: Rationality High

DTC P0336

Component /
System

Crankshaft Position Sensor - Rationality High

Monitor Strategy
Description

Fault Limit More crank teeth than expected More crank teeth for number of revolutions greater than 3

Enable Conditions

Disable Conditions

Input Rationality - High

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

94

Group 28 Camshaft Position Sensor: Rationality Monitors

Camshaft Position Sensor: Rationality Monitors

The camshaft position sensor is monitored by comparing its
output signal to the output signal of the crankshaft position
sensor.

P0340 Camshaft Position Sensor: Open Circuit

DTC P0340

Component /
System

Camshaft Position Sensor - Open

Monitor Strategy
Description

Fault Limit No signal from Camshaft Speed Sensor No signal for number of revolutions greater than 3

Enable Conditions

Disable Conditions

Input Open Circuit

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

P0016 Camshaft Position Sensor: Rationality Low

DTC P0016

Component /
System

Monitor Strategy
Description

Fault Limit Difference between teeth on crank and cam wheel 5 crank angles

5 seconds

Camshaft Position Sensor - Rationality Low

Input Rationality - Low

Enable Conditions

Disable Conditions

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

95

Group 28 P0341 Camshaft Position Sensor: Rationality High

P0341 Camshaft Position Sensor: Rationality High

DTC P0341

Component /
System

Camshaft Position Sensor - Rationality High

Monitor Strategy
Description

Fault Limit More cam teeth than expected More cam teeth for number of revolutions greater than 3

Enable Conditions

Disable Conditions

Input Rationality - High

• Engine Speed > 50 RPM

No Active DTC's:

• N/A

Time Required For
DTC To Be Set

MIL Illumination 2 Drive Cycles

Probable Causes See Tech Tool

5 seconds

96