Toyota PRIUS 2006 Trouble Code Chart

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

C1611

ECU Malfunction

1. Parking assist ECU initialization (not initialized parking assist ECU)

2. Height control sensor vehicle height difference setting (not initialized parking assist ECU)

3. Rear television camera optical axis adjustment (initialized parking assist ECU)

4. Steering angle setting (initialized parking assist ECU)

5. Parking assist ECU

C1612

IG Voltage is Low or High

1. Harness or connector

2. Parking assist ECU

C1613

ACC Voltage is Low or High

1. Harness or connector

2. Parking assist ECU

C1621

Back Camera Power Supply Failure

1. Harness or connector

2. Rear television camera assembly

3. Parking assist ECU

C1622

Open or Short Circuit in Back Camera Signal

1. Harness or connector

2. Rear television camera assembly

3. Parking assist ECU

C1625

Open or Short in Steering Angle Sensor +B

1. Harness or connector

2. Steering angle sensor (spiral with sensor cable sub-assembly)

C1626

Steering Angle Sensor Failure

1. Steering angle sensor (spiral with sensor cable sub-assembly)

2. Parking assist ECU

ADVANCED PARKING GUIDANCE SYSTEM

HINT:

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code.

Inspect fuses and relays before investigating the trouble areas shown in the table below.

Advanced Parking Guidance System

Page 1 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

C1627

Vehicle Height Sensor Voltage is Low or High

1. Harness or connector

2. Headlight leveling ECU assembly

3. Parking assist ECU

C1628

Vehicle Height Sensor Failure

1. Harness or connector

2. Rear height control sensor sub-assembly RH

3. Parking assist ECU

C1645

Power Steering Control System Failure

Power steering system

C164A

EPS Communication Malfunction

1. Parking assist ECU

2. Power steering system

3. Power steering ECU

C164E

Stop Switch Circuit Malfunction

Electronically controlled brake system

C1657

Hybrid Powertrain Control Module

Hybrid control system

C1658

Speed Sensor Malfunction

Electronically controlled brake system

C1659

Brake System Malfunction

Electronically controlled brake system

C1662

Ambient Temperature High

Parking assist ECU

C168B

AVC-LAN Communication Malfunction

AVC-LAN communication

C168C

AVC-LAN Command Time Out

AVC-LAN communication

C1691

Back Camera Initialization Incomplete

1. Height control sensor vehicle height difference setting

2. Rear television camera optical axis adjustment

3. Parking assist ECU

C1694

Steering Angle Initialization Incomplete

1. Steering angle setting

2. Parking assist ECU

C1695

Zero point Calibration of Vehicle Height Sensor Incomplete

1. Height control sensor vehicle height difference setting

2. Parking assist ECU

C1AE0

Front Left Side Sensor

1. No. 1 ultrasonic sensor (front left side sensor)

2. Parking assist ECU

Page 2 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

C1AE5

Front Right Side Sensor

1. No. 1 ultrasonic sensor (front right side sensor)

2. Parking assist ECU

U0073

Control Module Communication Bus Off

CAN communication system

U0126

Lost Communication with Steering Angle Sensor Module

CAN communication system

U0129

Lost Communication with Brake System Control Module

CAN communication system

U0131

Lost Communication with Power Steering Control Module

CAN communication system

U0140

Lost Communication with Main Body ECU

CAN communication system

U0293

Lost Communication with HV ECU

CAN communication system

U1000

Can Communication Failure(Message Registry)

Parking assist ECU

C1AEE

APGS Sensor Communication Circuit

1. Harness or connector

2. No. 1 ultrasonic sensor (front left side sensor)

3. No. 1 ultrasonic sensor (front right side sensor)

4. Parking assist ECU

Page 3 of 112

2010 Prius Diagnostic Trouble Code Chart

Page 4 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

01-21

ROM Error

Radio receiver assembly

01-22

RAM Error

Radio receiver assembly

01-2E

EEPROM Error

Radio receiver assembly

01-D5

Absence of Registration Unit

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

01-D6

No Master

1. Radio receiver assembly power source circuit

2. Power source circuit of the component which has stored this code

3. AVC-LAN circuit between the radio receiver assembly and component which has stored this code

4. Component which has stored this code

5. Radio receiver assembly

01-D7

Connection Check Error

1. Radio receiver assembly power source circuit

2. Power source circuit of the component which has stored this code

3. AVC-LAN circuit between the radio receiver assembly and component which has stored this code

4. Component which has stored this code

5. Radio receiver assembly

01-D8

No Response for Connection Check

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

AUDIO-VISUAL SYSTEM

Communication Diagnosis

Page 5 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

01-D9

Last Mode Error

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

01-DA

No Response Against ON / OFF Command

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

01-DB

Mode Status Error

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

01-DC

Transmission Error

If the same sub-code is stored in other components, check power source circuit and communication system of all components shown by sub-code

01-DD

Master Reset

1. Radio receiver assembly power source circuit

2. AVC-LAN circuit between the radio receiver assembly and component which has stored this code

3. Radio receiver assembly

4. Component which has stored this code

01-DE

Slave Reset

1. Power source circuit of the component shown by the sub-code

2. AVC-LAN circuit between the radio receiver assembly and component shown by the subcode

3. Component shown by the sub-code

Page 6 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

01-DF

Master Error

1. Radio receiver assembly power source circuit

2. AVC-LAN circuit between the radio receiver assembly and component which has stored this code

3. Radio receiver assembly

4. Component which has stored this code

01-E0

Registration Complete Indication Error

01-E1

Voice Processing Device ON Error

1. Radio receiver assembly power source circuit

2. AVC-LAN circuit between the radio receiver assembly and component which has stored this code

3. Radio receiver assembly

4. Component which has stored this code

01-E2

ON / OFF Indication Parameter Error

Radio receiver assembly

01-E3

Registration Demand Transmission

01-E4

Multiple Frame Incomplete

01-F2

No Response from Diagnosis Memory Request

Stereo component amplifier assembly

01-FF

No Response to Diagnosis Request

Stereo component amplifier assembly

DTC CODE

DETECTION ITEM

TROUBLE AREA

57-10

TEL ECU Malfunction (TEL)

Radio receiver assembly

57-47

Bluetooth Module Initialization Failed

Radio receiver assembly

DTC CODE

DETECTION ITEM

TROUBLE AREA

60-10

AM Tuner PLL does not Lock

Radio receiver assembly

60-11

FM Tuner PLL does not Lock

Radio receiver assembly

60-42

Tuner Power Source Error

Radio receiver assembly

Telephone

Radio Unit

Page 7 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

60-43

AM Tuner Error

Radio receiver assembly

60-44

FM Tuner Error

Radio receiver assembly

60-50

Malfunction in Internal IC

Radio receiver assembly

DTC CODE

DETECTION ITEM

TROUBLE AREA

62-10

CD Player Mechanical Error

Radio receiver assembly

62-11

CD Insertion and Ejection Error

Radio receiver assembly

62-12

CD Reading Abnormal

Radio receiver assembly

62-41

Wrong Disc

1. CD

2. Radio receiver assembly

62-42

Disc cannot be Read

1. CD

2. Radio receiver assembly

62-43

CD-ROM Abnormal

1. CD

2. Radio receiver assembly

62-44

CD Abnormal

Radio receiver assembly

62-45

Eject Error

Radio receiver assembly

62-46

Scratched / Reversed Disc

1. CD

2. Radio receiver assembly

62-47

High Temperature

Radio receiver assembly

62-48

Excess Current

Radio receiver assembly

62-50

Tray Insertion / Ejection Error

Radio receiver assembly

62-51

Elevator Error

Radio receiver assembly

62-52

Clamp Error

Radio receiver assembly

62-78

DSP Error

62-7D

Disc cannot be Played

1. CD

2. Radio receiver assembly

CD Player

Page 8 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

62-7E

No Playable Files

1. CD

2. Radio receiver assembly

62-7F

1. CD

2. Radio receiver assembly

DTC CODE

DETECTION ITEM

TROUBLE AREA

63-10

CD Changer Mechanical Error

Radio receiver assembly

63-11

CD Insertion and Ejection Error

Radio receiver assembly

63-12

CD Reading Abnormal

Radio receiver assembly

63-41

Wrong Disc

1. CD

2. Radio receiver assembly

63-42

Disc cannot be Read

1. CD

2. Radio receiver assembly

63-43

CD-ROM Abnormal

1. CD

2. Radio receiver assembly

63-44

CD Abnormal

Radio receiver assembly

63-45

Eject Error

Radio receiver assembly

63-46

Scratched / Reversed Disc

1. CD

2. Radio receiver assembly

63-47

High Temperature

Radio receiver assembly

63-48

Excess Current

Radio receiver assembly

63-50

Tray Insertion / Ejection Error

Radio receiver assembly

63-51

Elevator Error

Radio receiver assembly

63-52

Clamp Error

Radio receiver assembly

63-78

DSP Error

63-7D

Disc cannot be Played

1. CD

2. Radio receiver assembly

In-dash CD Changer

Page 9 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

63-7E

No Playable Files

1. CD

2. Radio receiver assembly

63-7F

1. CD

2. Radio receiver assembly

DTC CODE

DETECTION ITEM

TROUBLE AREA

C0-11

Satellite Radio Tuner Internal Circuit Error 1

Radio receiver assembly

C0-12

Satellite Radio Tuner Internal Circuit Error 2

Radio receiver assembly

C0-13

Satellite Radio Tuner Internal Circuit Error 3

Radio receiver assembly

C0-14

Satellite Radio Tuner Internal Circuit Error 4

Radio receiver assembly

C0-15

Satellite Radio Tuner Internal Circuit Error 5

Radio receiver assembly

C0-16

Satellite Radio Tuner Internal Circuit Error 6

Radio receiver assembly

C0-40

Antenna not Connected

1. Antenna cord

2. Amplifier antenna assembly (Satellite radio antenna)

3. Radio receiver assembly

C0-41

Antenna Shorted

1. Antenna cord

2. Amplifier antenna assembly (Satellite radio antenna)

3. Radio receiver assembly

XM Tuner

Page 10 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

U0104

Lost Communication with Driving Support ECU

1. Driving support ECU branch wire or connector

2. Power source circuit of driving support ECU

3. Driving support ECU

U1002

Lost Communication with Gateway Module (Power Management1)

1. Open or short in CAN No. 2 bus main wire or connector

2. Open or short in CAN No. 2 bus branch wire or connector

3. Power management control ECU

4. Driving support ECU

5. Seat belt control ECU

6. Parking assist ECU

7. CAN No. 3 junction connector

U1100

Lost Communication with Seat Belt Control ECU

1. Seat belt control ECU branch wire or connector

2. Power source circuit of seat belt control ECU

3. Seat belt control ECU

U110B

Lost Communication with Parking Assist Control Module "B"

1. Parking assist ECU branch wire or connector

2. Power source circuit of parking assist ECU

3. Parking assist ECU

CAN COMMUNICATION SYSTEM

Power Management Control ECU Output DTCs

(Techstream Display/Power Management1)

Page 11 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

U0100

Lost Communication with ECM / PCM

1. ECM main wire or connector

2. Power source circuit of ECM

3. ECM

U0129

Lost Communication with Brake System Control Module

1. Skid control ECU branch wire or connector

2. Power source circuit of skid control ECU

3. Skid control ECU

U0164

Lost Communication with A/C ECU

1. Air conditioning amplifier branch wire or connector

2. Power source circuit of air conditioning amplifier

3. Air conditioning amplifier

U1002

Lost Communication with Gateway Module (Power Management2)

1. Open or short in power management bus main wire or connector

2. Open or short in power management bus branch wire or connector

3. Power management control ECU

4. ECM

5. Air conditioning amplifier

6. Skid control ECU

7. CAN No. 4 junction connector

DTC CODE

DETECTION ITEM

TROUBLE AREA

U1002

Lost Communication with Gateway Module (Parking Assist Bus)

1. Open or short in parking assist bus main wire or connector

2. Open or short in parking assist bus branch wire or connector

3. Driving support ECU

4. CAN No. 5 junction connector

Power Management Control ECU Output DTCs

(Techstream Display/Power Management2)

Driving Support ECU Output DTCs

(Techstream Display/Pre-Collision2)

Page 12 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

TROUBLE AREA

P0571

Brake Switch "A" Circuit

- Stop light switch assembly

- Stop light switch assembly circuit

- Power management control ECU

P0575

Cruise Control Input Circuit

- Power management control ECU

P1578

Brake System Malfunction

- Electronically controlled brake system

U0122

Lost Communication with Vehicle Dynamics Control Module

- Brake booster with master cylinder (skid control ECU)

- CAN communication system

- Power management control ECU

CRUISE CONTROL SYSTEM

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code.

Cruise Control System

Page 13 of 112

2010 Prius Diagnostic Trouble Code Chart

Page 14 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

C1A01

Driving Support ECU

Driving support ECU

C1A02

Vehicle Information Not Obtained

- Driving support ECU

- Main body ECU

C1A03

Driving Support ECU Internal Logical Error

Driving support ECU

C1A05

Stop Light Switch Circuit

- Stop light switch assembly

- Stop light switch circuit

- Driving support ECU

C1A06

Stop Light Switch Input Circuit

Driving support ECU

C1A0A

Front Radar Sensor Region Code Mismatch

- Millimeter wave radar sensor assembly

- Main body ECU

- Driving support ECU

C1A0C

Object Recognition Camera Region Code Mismatch

- Lane recognition camera sensor assembly

- Driving support ECU

C1A10

Front Radar Sensor

- Millimeter wave radar sensor assembly

- Driving support ECU

C1A11

Front Radar Sensor Incorrect Axial Gap

- Millimeter wave radar sensor assembly

- Driving support ECU

C1A14

Front Radar Sensor Beam Axis Not Adjusted

- Millimeter wave radar sensor assembly

- Driving support ECU

C1A20

Object Recognition ECU

- Lane recognition camera sensor assembly

- Driving support ECU

C1A22

Object Recognition Camera Incorrect Axial Gap

- Lane recognition camera sensor assembly

- Driving support ECU

DYNAMIC RADAR CRUISE CONTROL SYSTEM

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code.

Dynamic Radar Cruise Control System

Page 15 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

C1A23

Object Recognition Camera Initialization Incomplete

- Lane recognition camera sensor assembly

- Driving support ECU

C1A40

ENG / EHV Device

- Hybrid control system

- Power management control ECU

- SFI system

- ECM

- Driving support ECU

C1A41

Brake Request Value Mismatch between ENG / EHV and Driving Support ECU

- Electronically controlled brake system

- Hybrid control system

- Power management control ECU

- Brake booster with maser cylinder (skid control ECU)

- Driving support ECU

C1A4A

Skid Control Buzzer Circuit

- Electronically controlled brake system

- Driving support ECU

C1A4B

Stop Light Relay Circuit

- Stop light control relay

- Stop light control relay circuit

- Brake booster with maser cylinder (skid control ECU)

C1A50

Brake System

- Electronically controlled brake system

- Driving support ECU

P1615

Communication Error from Distance Control ECU to HV ECU

- Driving support ECU

- Power management control ECU

U0122

Lost Communication with Vehicle Dynamics Control Module

- Brake booster with maser cylinder (skid control ECU)

- CAN communication system

- Driving support ECU

U0123

Lost Communication with Yaw Rate Sensor Module

- Yaw rate sensor

- CAN communication system

- Driving support ECU

Page 16 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

U0126

Lost Communication with Steering Angle Sensor Module

- Steering angle sensor

- CAN communication system

- Driving support ECU

U0235

Lost Communication with Cruise Control Front Distance Range Sensor

- Millimeter wave radar sensor assembly

- Millimeter wave radar sensor circuit

- Driving support ECU

U0293

Lost Communication with HV ECU

- Power management control ECU

- CAN communication system

- Driving support ECU

- Brake booster with maser cylinder (skid control ECU)

U1104

Lost Communication with Driving Support ECU

- Driving support ECU

- CAN communication system

- Millimeter wave radar sensor assembly

- Power management control ECU

- Brake booster with maser cylinder (skid control ECU)

U1119

Lost Communication with Object Recognition ECU (CAN)

- Lane recognition camera sensor assembly

- CAN communication system

- Driving support ECU

Page 17 of 112

2010 Prius Diagnostic Trouble Code Chart

Page 18 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

MASTER

WARNING

LIGHT

MULTI-

DISPLAY

ERROR

MESSAGE

MEMORY

C2300

Actuator System Malfunction

- Transmission control ECU assembly

- Auxiliary battery

- Integration relay

- Shift control actuator assembly

- Hybrid vehicle transaxle assembly

- Wire harness or connector

Comes on

DTC stored

C2301

Shift Changing Time Malfunction

- Auxiliary battery

- Shift control actuator assembly

- Hybrid vehicle transaxle assembly

- Transmission control ECU assembly

Comes on

DTC stored

C2303

Short in Power Source Relay Circuit

- Transmission control ECU assembly

- Integration relay

- Wire harness or connector

Comes on

DTC stored

ELECTRONIC SHIFT LEVER SYSTEM

HINT:

 Remove the P CON MAIN fuse to clear DTCs C2300, C2301, C2303, C2304, C2305, C2306,

C2307 and C2309 because they cannot be clear with the Techstream.

 When a DTC is detected, the master warning light comes on and an error message is indicated

on the multi-display.

Electronic Shift Lever System

Page 19 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

MASTER

WARNING

LIGHT

MULTI-

DISPLAY

ERROR

MESSAGE

MEMORY

C2304

Open or Short Circuit in U Phase

- Auxiliary battery

- Transmission control ECU assembly

- Shift control actuator assembly

- Integration relay

- Wire harness or connector

Comes on

DTC stored

C2305

Open or Short Circuit in V Phase

- Auxiliary battery

- Transmission control ECU assembly

- Shift control actuator assembly

- Integration relay

- Wire harness or connector

Comes on

DTC stored

C2306

Open or Short Circuit in W Phase

- Auxiliary battery

- Transmission control ECU assembly

- Shift control actuator assembly

- Integration relay

- Wire harness or connector

Comes on

DTC stored

C2307

Power Supply

- Transmission control ECU assembly

- Wire harness or connector

Comes on

DTC stored

C2308

EEPROM Malfunction

- Transmission control ECU assembly

DTC stored

C2309

Open in B+ Circuit

- Transmission control ECU assembly

- Auxiliary battery

- Wire harness or connector

Comes on

DTC stored

Page 20 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC

CODE

DETECTION ITEM

TROUBLE AREA

MASTER

WARNING

LIGHT

MULTI-

DISPLAY

ERROR

MESSAGE

MEMORY

C2310

Open or Short Circuit in Battery Circuit

- P CON MAIN fuse

- Transmission control ECU assembly

- Wire harness or connector

Comes on

DTC stored

C2311

Communication Error from HV ECU

- Transmission control ECU assembly

- Power management control ECU

- Wire harness or connector

Comes on

DTC stored

C2315

HV System

- Power management control ECU

Comes on

DTC stored

U0146

Lost Communication with Body ECU

- CAN communication system

DTC stored

Page 21 of 112

2010 Prius Diagnostic Trouble Code Chart

Page 22 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

Electronically Controlled Brake System Malfunction

Electronically controlled brake system

C0200/31

Front Speed Sensor RH Circuit

501

502

503

504

506

507

508

1. Open or short in speed sensor

2. Improperly installed speed sensor, or abnormal clearance between sensor and rotor

3. Open or short in wire harness

4. Improperly connected connector, deformation or corrosion of terminals

5. Front speed sensor RH

6. Brake booster with master cylinder (Skid control ECU)

C0205/32

Front Speed Sensor LH Circuit

511

512

513

514

516

517

518

1. Open or short in speed sensor

2. Improperly installed speed sensor, or abnormal clearance between sensor and rotor

3. Open or short in wire harness

4. Improperly connected connector, deformation or corrosion of terminals

5. Front speed sensor LH

6. Brake booster with master cylinder (Skid control ECU)

ELECTRONICALLY CONTROLLED BRAKE SYSTEM

NOTICE:

When replacing the brake booster with master cylinder (skid control ECU), sensor,

etc., make sure that the power switch is turned off, the stop light switch is off, and 2 minutes have elapsed since the driver's door was closed.

HINT:

 If no abnormality is found when inspecting parts, inspect the skid control ECU and ground

points for poor connections.

 When 2 or more DTCs are detected, perform circuit inspections one by one until the problem is

identified.

 Inspect the fuses and relays before inspecting the trouble areas as shown in the table below.

ABS DTC

Page 23 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C0210/33

Rear Speed Sensor RH Circuit

521

522

523

524

526

527

528

1. Open or short in speed sensor

2. Improperly installed speed sensor, or abnormal clearance between sensor and rotor

3. Open or short in wire harness

4. Improperly connected connector, deformation or corrosion of terminals

5. Rear speed sensor RH

6. Brake booster with master cylinder (Skid control ECU)

C0215/34

Rear Speed Sensor LH Circuit

531

532

533

534

536

537

538

1. Open or short in speed sensor

2. Improperly installed speed sensor, or abnormal clearance between sensor and rotor

3. Open or short in wire harness

4. Improperly connected connector, deformation or corrosion of terminals

5. Rear speed sensor LH

6. Brake booster with master cylinder (Skid control ECU)

C1235/35

Foreign Object is Attached on Tip of Front Speed Sensor RH

541

1. Speed sensor rotor malfunction (foreign object attached)

2. Foreign object attached to speed sensor

3. Open or short in speed sensor

4. Open or short in wire harness

5. Improperly connected connector, deformation or corrosion of terminals

6. Resistance in speed sensor circuit

7. Brake booster with master cylinder (Skid control ECU)

Page 24 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1236/36

Foreign Object is Attached on Tip of Front Speed Sensor LH

542

1. Speed sensor rotor malfunction (foreign object attached)

2. Foreign object attached to speed sensor

3. Open or short in speed sensor

4. Open or short in wire harness

5. Improperly connected connector, deformation or corrosion of terminals

6. Resistance in speed sensor circuit

7. Brake booster with master cylinder (Skid control ECU)

C1238/38

Foreign Object is Attached on Tip of Rear Speed Sensor RH

543

1. Speed sensor rotor malfunction (foreign object attached)

2. Foreign object attached to speed sensor

3. Open or short in speed sensor

4. Open or short in wire harness

5. Improperly connected connector, deformation or corrosion of terminals

6. Resistance in speed sensor circuit

7. Brake booster with master cylinder (Skid control ECU)

C1239/39

Foreign Object is Attached on Tip of Rear Speed Sensor LH

544

1. Speed sensor rotor malfunction (foreign object attached)

2. Foreign object attached to speed sensor

3. Open or short in speed sensor

4. Open or short in wire harness

5. Improperly connected connector, deformation or corrosion of terminals

6. Resistance in speed sensor circuit

7. Brake booster with master cylinder (Skid control ECU)

C1243/43

Acceleration Sensor Stuck Malfunction

561

562

563

564

Yaw rate and acceleration sensor internal stuck malfunction

Page 25 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1244/44

Open or Short in Acceleration Sensor Circuit

571

1. Yaw rate and acceleration sensor installed improperly

2. Yaw rate and acceleration sensor

C1245/45

Acceleration Sensor Output Malfunction

581

1. Yaw rate and acceleration sensor installed improperly

2. Yaw rate and acceleration sensor

C1336/98

Zero Point Calibration of Acceleration Sensor Undone

1. Zero point calibration undone

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)

C1381/97

Acceleration Sensor Power Supply Voltage Malfunction

601

1. Yaw rate and acceleration sensor supply voltage shut down

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

C1442/44

Invalid Data Received from Acceleration Sensor

572

Yaw rate and acceleration sensor

U0124/95

Lost Communication with Lateral Acceleration Sensor Module

591

592

1. CAN communication line (CAN No. 1 bus)

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

ABS Control System Malfunction

ABS control system

Electronically Controlled Brake System Malfunction

Electronically controlled brake system

VSC DTC

Page 26 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1210/36

Zero Point Calibration of Yaw Rate Sensor Undone

1. Zero point calibration undone

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)

C1231/31

Steering Angle Sensor Circuit Malfunction

701

702

703

Steering angle sensor internal malfunction

C1234/34

Yaw Rate Sensor Malfunction

711

712

713

714

Yaw rate and acceleration sensor internal malfunction

C1290/66

Steering Angle Sensor Zero Point Malfunction

751

1. Yaw rate and acceleration sensor zero point calibration incomplete

2. Poor adjustment of the center position of the steering wheel

3. Poor adjustment of front wheel alignment

C1310/51

Malfunction in HV system

Power management control ECU (Hybrid vehicle control ECU)

C1380/64

Stop Light Control Relay Malfunction

761

762

1. Stop light switch

2. Stop light switch circuit

3. Stop light control relay

4. Stop light control relay circuit

5. Brake booster with master cylinder (Skid control ECU)

C1439/66

Steering Angle Sensor Initialization Incomplete

752

1. Steering angle sensor

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

C1440/98

Unusual Bank Angle Detected

Yaw rate and acceleration sensor

C1443/34

Invalid Data Received from Yaw Rate Sensor

715

Yaw rate and acceleration sensor

Page 27 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1445/66

Vehicle Driven with Steering Angle Sensor not Initialized

753

1. Steering angle sensor

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

U0123/62

Lost Communication with Yaw Rate Sensor Module

731

732

1. CAN communication line (CAN No. 1 bus)

2. Yaw rate and acceleration sensor

3. Brake booster with master cylinder (Skid control ECU)

U0126/63

Lost Communication with Steering Angle Sensor Module

741

742

1. CAN communication line (CAN No. 1 bus)

2. Steering angle sensor

3. Brake booster with master cylinder (Skid control ECU)

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

ABS Control System Malfunction

ABS control system

C1202/68

Master Reservoir Level Malfunction

371

1. Low brake fluid level

2. Brake fluid leaks

3. Brake master cylinder reservoir (Brake fluid level warning switch) internal open circuit

4. Brake master cylinder reservoir (Brake fluid level warning switch) internal short circuit

5. Open in wire harness

6. Short in wire harness

7. Brake disc rotor excessive wear

8. Brake booster with master cylinder (Skid control ECU)

C1203/95

ECM Communication Circuit Malfunction

1. The wrong ECU and sensor was installed

2. Brake booster with master cylinder (Skid control ECU)

Electronically Controlled Brake System DTC

Page 28 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1211/25

SLA Linear Solenoid

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1212/26

SLR Linear Solenoid

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1214/62

Hydraulic Control System Malfunction

431

432

433

434

435

436

437

438

1. Brake fluid leaks

2. Brake disc rotor excessive wear

3. Brake booster with master cylinder (Brake actuator)

C1225/31

SA1 Solenoid Circuit

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1226/32

SA2 Solenoid Circuit

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1227/33

SA3 Solenoid Circuit

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1228/34

STR Solenoid Circuit

1. Supply voltage reduced

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

Page 29 of 112

2010 Prius Diagnostic Trouble Code Chart

DTC CODE

DETECTION ITEM

INF CODE

TROUBLE AREA

C1242/42

Open in IG1 / IG2 Power Source Circuit

111

112

1. Open or short in IG1 circuit

2. Open or short in IG2 circuit

3. Improperly connected connector, deformation or corrosion of terminals

4. Smart key system (IG start circuit)

5. Auxiliary battery

6. Hybrid control system (Charging circuit)

7. Brake booster with master cylinder (Skid control ECU)

C1246/46

Master Cylinder Pressure Sensor Malfunction

201

202

203

204

207

1. Brake pedal stroke sensor

2. Brake booster with master cylinder (Skid control ECU or brake actuator)

C1247/47

Stroke Sensor Malfunction

211

212

213

214

215

216

217

218

219

220

221

222

223

1. Open or short in brake pedal stroke sensor power supply circuit

2. Open or short in wire harness

3. Improperly connected connector, deformation or corrosion of terminals

4. Brake pedal stroke sensor

5. Brake booster with master cylinder (Skid control ECU)

C1249/49

Open in Stop Light Switch Circuit

231

1. STOP fuse

2. Stop light switch

3. Stop light switch circuit

4. Brake booster with master cylinder (Skid control ECU)

Page 30 of 112

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