Page 1
John Deere 8400 Diagnostic Codes
When either a Service Alert or Information
indicator is displayed it is suggested the tractor
be placed in park or engine shut off. Restart
the engine to verify if the active Diagnostic
Trouble Code reappears before contacting
your John Deere dealer. Sometimes, the code
can be corrected by resetting the
communication messages when tractor is
restarted.
Some Service Alerts and Information
indicators can be acknowledged and display
cleared by pressing the select switch on the
CommandCenter. The display will return to a
normal mode allowing tractor function to
continue. However, diagnostic trouble code
may reappear at a later date if condition still
exists. For an explanation of STOP, Service
Alert, Information Indicators and Diagnostics
Trouble Codes refer to section 15 in this
document.
OU1092A,0000020 -19-28SEP06-1/27
Diagnostic
Trouble Code
Display
Solution
Armrest Control Unit Diagnostic Trouble Codes (ACU)
ACU 000158.04
Rear PTO system
ACU Switched Supply Voltage Low. Visually inspect
around the batteries and alternator for any visual signs of
damage or accumulated debris. Have John Deere dealer
repair as soon as possible.
ACU 000177.17
Transmission Oil
Temperature Low
Engine Speed Limited Due to Cold Oil. Slow engine speed
to less than 1500 rpm until hydraulic oil temp is above -5
°C (23 °F).
ACU 000581.07
Transmission System
Transmission Not Responding to Command. Have John
Deere dealer repair as soon as possible.
Page 2
ACU 000974.02
ACU 000974.03
Operator Controls
Hand Throttle Circuit Voltage Problem. Have John Deere
dealer repair at earliest convenience.
ACU 000974.04
Operator Controls
Rear PTO Circuit Voltage Problem. Have John Deere
dealer repair at earliest convenience.
ACU 001079.02
ACU 001079.03
ACU 001079.04
Operator Controls
ACU Sensor Supply 1 Voltage Problem. Have John Deere
dealer repair as soon as possible.
ACU 001080.02
ACU 001080.03
ACU 001080.04
Operator Controls
ACU Sensor Supply 2 Voltage Problem. Have John Deere
dealer repair as soon as possible.
ACU 002000.09
Communication System
ECU Message Missing. Check fuse F24. Have John Deere
dealer repair as soon as possible.
ACU 002003.09
Communication System
PTI or PTP Message Missing. Have John Deere dealer
repair as soon as possible.
ACU 002020.09
Communication System
SFA Message Missing. Have John Deere dealer repair as
soon as possible.
ACU 002049.09
Communication System
CAB Message Missing. Check fuse F22. Have John Deere
dealer repair as soon as possible.
ACU 523775.02
Single Lever Control
Single Lever Control (If Equipped) - Hand Presence Switch
Problem. Move hand to show operator is in place. If code
still exists, have John Deere dealer repair at earliest
convenience.
ACU 523776.02
ACU 523801.02
ACU 523804.02
ACU 523804.03
ACU 523804.04
Single Lever Control
Single Lever Control Problem. To keep working, use SCV
III and IV controls. Go to CommandCenter and disable
single lever control. Have John Deere dealer repair at
earliest convenience.
Page 3
ACU 523805.02
ACU 523805.03
ACU 523805.04
ACU 523923.02
ACU 523923.03
ACU 523923.04
Operator Controls
SCV I Control Lever Switch/Sensor Problem. Have John
Deere dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-2/27
Diagnostic
Trouble Code
Display
Solution
ACU 523953.02
ACU 523953.03
ACU 523953.04
Operator Controls
Speed Control Lever Circuit Problem. Have John Deere
dealer repair at earliest convenience.
ACU 523954.07
Operator Controls
Set Speed Adjuster Problem. Have John Deere dealer
repair at earliest convenience.
ACU 523955.31
Transmission System
Engine Load to High in Manual Mode. Reduce load and/or
ballast. If code returns, have John Deere dealer repair at
earliest convenience.
ACU 523960.17
ACU 523960.31
Operator Not In Seat
Operator Not Seated or Faulty Sensor. Check and repair if
needed.
ACU 523961.02
Transmission System
Park Engaged While in Gear. Restart tractor, operate
tractor in forward gear. If code returns, have John Deere
dealer repair at earliest convenience.
Page 4
ACU 523961.07
Transmission Not In Park
Park Lock Engagement Problem. Restart tractor. Operate
vehicle slowly in forward gear. If code returns, have John
Deere dealer repair at earliest convenience.
ACU 523962.31
MFWD System
MFWD Speed Incorrect. Is a function of traction control.
Very important if pulling trailers. Have John Deere dealer
repair at earliest convenience.
ACU 523966.31
Transmission Come Home
Mode
Have John Deere dealer repair as soon as possible.
ACU 523970.02
ACU 523970.03
ACU 523970.04
Operator Controls
Front Hitch Circuit Problem. Have John Deere dealer
repair at earliest convenience.
ACU 524020.31
Operator Controls
Transmission In Gear At Start-Up. Restart vehicle with
transmission in park. If code returns, have John Deere
dealer repair at earliest convenience.
ACU 524014.31
ACU 524017.13
ACU 524017.31
ACU 524018.31
ACU 524019.31
Operator Controls
Left-Hand Reverser Problem. Have John Deere dealer
repair at earliest convenience.
ACU 524021.31
Operator Controls
Multiple Reverser Switches Conflict. Have John Deere
dealer repair at earliest convenience.
ACU 524022.31
ACU 524023.31
ACU 524024.31
ACU 524025.31
ACU 524026.31
ACU 524027.31
ACU 524030.31
ACU 524031.31
ACU 524032.31
Operator Controls
Left-Hand Reverser Circuit Problem. Have John Deere
dealer repair at earliest convenience.
Page 5
ACU 524034.31
ACU 524036.31
ACU 524101.02
Operator Controls
Front Hitch Valve Control Lever Switch/Sensor Circuit
Conflict. Have John Deere dealer repair at earliest
convenience.
OU1092A,0000020 -19-28SEP06-3/27
Diagnostic
Trouble Code
Display
Solution
ACU 524101.03
ACU 524101.04
Operator Controls
Front Hitch Valve Control Lever Sensor Circuit Voltage
Problem. Have John Deere dealer repair at earliest
convenience.
ACU 524102.02
Operator Controls
SCV Control Lever Switch/Sensor Circuit Conflict. Have
John Deere dealer repair at earliest convenience.
ACU 524102.03
ACU 524102.04
Operator Controls
SCV Control Lever Sensor Circuit Voltage Problem. Have
John Deere dealer repair at earliest convenience.
ACU 524103.02
ACU 524103.03
ACU 524103.04
ACU 524104.02
ACU 524104.03
ACU 524104.04
ACU 524105.02
ACU 524105.03
ACU 524105.04
Operator Controls
SCV Control Lever Circuit Problem. Have John Deere
dealer repair at earliest convenience.
Page 6
ACU 524212.02
ACU 524212.03
ACU 524212.04
Operator Controls
Rear Hitch Control Lever Circuit Problem. Have John
Deere dealer repair at earliest convenience.
ACU 524224.02
ACU 524224.14
Operator Controls
Rear PTO Switch Circuit Problem. Have John Deere dealer
repair at earliest convenience.
ACU 524224.31
Operator Controls
Transmission Relay Circuit Problem. Have John Deere
dealer repair at earliest convenience.
ACU 524254.31
Operator Controls
Transmission Enable Relay Circuit Fault. Have John Deere
dealer repair at earliest convenience.
ActiveSeat Unit Diagnostic Trouble Codes (ASU)
ASU 524002.31
ActiveSeat System
Seat Pressure Control Solenoid Problem. Have John Deere
dealer repair at earliest convenience.
ASU 524008.13
ActiveSeat System
ASU Not Calibrated. Have John Deere dealer repair as
soon as possible.
ClimaTrak Display Codes (ATC) - If Equipped
IMPORTANT: Check the cleanliness of the condenser at the front of the tractor and
make sure the cab recirculation air filter is not plugged for all ATC diagnostic trouble
codes. If the codes return, contact your John Deere dealer as soon as possible.
Front Brake Control Unit Diagnostic Trouble Codes (BRC)
BRC 000158.04
BRC 000168.04
Secondary Brake System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair as soon as
possible.
BRC 000629.12
BRC 000630.13
Secondary Brake System
BRC Control Unit Problem. Have John Deere dealer repair
as soon as possible.
Page 7
OU1092A,0000020 -19-28SEP06-4/27
Diagnostic
Trouble Code
Display
Solution
BRC 001079.03
BRC 001079.04
BRC 001079.05
BRC 001079.06
Secondary Brake System
Sensor Supply Voltage Problem. Have John Deere dealer
repair as soon as possible.
BRC 522280.00
Secondary Brake System
Secondary Brake Pressure High. Have John Deere dealer
repair as soon as possible.
BRC 522280.01
Secondary Brake System
Secondary Brake Pressure Low. Have John Deere dealer
repair as soon as possible.
BRC 523652.02
Hydraulic System
Control Unit Attached to Incompatible Harness. Have
John Deere dealer repair as soon as possible.
BRC 523837.00
BRC 523837.03
BRC 523837.04
BRC 523837.13
Secondary Brake System
Rear Brake Pressure Circuit Problem. Have John Deere
dealer repair as soon as possible.
BRC 523840.00
BRC 523840.01
BRC 523840.03
BRC 523840.04
BRC 523840.13
Secondary Brake System
Front Brake Pressure Circuit Problem. Have John Deere
dealer repair as soon as possible.
BRC 523844.05
BRC 523844.06
Secondary Brake System
Front Brake Solenoid Circuit Problem. Have John Deere
dealer repair as soon as possible.
Page 8
BRC 523844.13
BRC 523910.02
Secondary Brake System
Control Unit Problem. Have John Deere dealer repair as
soon as possible.
BRC 524016.04
Secondary Brake System
Switched Supply Voltage Problem. Check Fuse F24.
Restart vehicle. If code returns, have John Deere Dealer
repair as soon as possible.
BRC 524157.19
Secondary Brake System
Right Brake Pedal Switch Problem. Have John Deere
dealer repair as soon as possible.
BRC 524162.19
BRC 524169.19
Secondary Brake System
Left Brake Pedal Switch Problem. Have John Deere dealer
repair as soon as possible.
Cab Control Unit Diagnostic Trouble Codes (CAB)
CAB 000091.02
CAB 000091.03
CAB 000091.04
Operator Controls
Foot Throttle Sensor Problem. Have John Deere dealer
repair at earliest convenience.
CAB 001079.02
CAB 001079.03
CAB 001079.04
Operator Controls
CAB Supply Voltage Problem. Have John Deere dealer
repair as soon as possible.
CAB 001504.30
Operator Controls
Seat Switch Circuit Problem. Have John Deere dealer
repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-5/27
Page 9
Diagnostic
Trouble Code
Display
Solution
CAB 002876.02
Operator Controls
Turn Signal Switch Problem. Have John Deere dealer
repair at earliest convenience.
CAB 523908.02
Operator Controls
Rear PTO Remote Switch Problem. Have John Deere
dealer repair at earliest convenience.
CAB 523922.31
Hand Brake On
Secondary Hand Brake on While Moving. Disengage hand
brake. If code returns, have John Deere dealer repair as
soon as possible.
CAB 524014.31
Operator Controls
Left-Hand Reverser Circuit Problem. Have John Deere
dealer repair at earliest convenience.
CAB 524016.04
Operator Controls
CAB Switched Power Voltage Problem. Check fuse F15.
Restart vehicle. If code returns, have John Deere dealer
repair returns at earliest convenience.
CAB 524017.13
Operator Controls
Left-Hand Reverser Lever Type Not Selected. Have John
Deere dealer repair at earliest convenience.
CAB 524017.31
Operator Controls
Left-Hand Reverser Power Circuit Fault. Have John Deere
dealer repair at earliest convenience.
CAB 524018.31
CAB 524019.31
Operator Controls
Left-Hand Reverser Transition Fault. Lever is held in an
invalid position. Move lever to PARK. Have John Deere
dealer repair at earliest convenience.
CAB 524020.31
Power Up in Gear
Left-Hand Reverser in Gear at Power Up. Place reverser
lever in PARK position. Restart vehicle. If code returns,
have John Deere dealer repair at earliest convenience.
Page 10
CAB 524021.31
CAB 524022.31
CAB 524023.31
CAB 524024.31
CAB 524025.31
CAB 524026.31
CAB 524027.31
Operator Controls
Left-Hand Reverser Circuit Problem. Have John Deere
dealer repair at earliest convenience.
CAB 524030.31
CAB 524031.31
CAB 524032.31
CAB 524034.31
CAB 524036.31
Operator Controls
Left-Hand Reverser Circuit Problem. Have John Deere
dealer repair at earliest convenience.
CAB 524166.02
CAB 524166.03
CAB 524166.04
CAB 524166.13
CAB 524166.30
Operator Controls
Right Brake Pedal Circuit Problem. Have John Deere
dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-6/27
Diagnostic
Trouble Code
Display
Solution
CAB 524169.02
CAB 524169.03
CAB 524169.04
CAB 524169.13
CAB 524169.30
Operator Controls
Left Brake Pedal Circuit Problem. Have John Deere dealer
repair at earliest convenience.
CAB 524173.02
CAB 524173.03
CAB 524173.04
Operator Controls
Clutch Pedal Sensor Circuit Conflict. Have John Deere
dealer repair at earliest convenience.
Page 11
Central Control Unit Diagnostic Trouble Codes (CCU)
CCU 000090.03
CCU 000090.04
Rear PTO System
Rear PTO Oil Temperature Circuit Problem. Have John
Deere dealer repair at earliest convenience.
CCU 000096.03
Fuel Level System
Fuel Level Circuit Problem. Turn key switch to RUN
position (engine off). Check fuel level. If code returns,
have John Deere dealer repair at earliest convenience.
CCU 000096.17
Fuel Level Low
Turn key switch to RUN position (engine off). Check fuel
level. If code returns have John Deere dealer repair at
earliest convenience.
CCU 000107.00
Engine Air Filter Restricted
Clean or replace engine air filter.
CCU 000107.03
CCU 000107.04
Air Filter System
Engine Air Filter Restriction Sensor Voltage Problem. Have
John Deere dealer repair at earliest convenience.
CCU 000107.15
Engine Air Filter Restricted
Engine Air Filter Becoming Restricted. Clean or replace
engine air filter.
CCU 000107.16
Engine Air Filter Restricted
Engine Air Filter Restricted, Power Derated. Clean or
replace engine air filter.
CCU 000569.05
Differential Lock System
Rear Differential Lock Circuit Problem. Have John Deere
dealer repair at earliest convenience.
CCU 000976.04
Rear PTO System
Rear PTO Sensor Voltage Problem. Have John Deere
dealer repair at earliest convenience.
CCU 001079.03
CCU 001079.04
Electrical system
CCU Sensor Supply Voltage Problem. Have John Deere
dealer repair at earliest convenience.
Page 12
CCU 001086.18
Air Brake Pressure Low
This code will generate when vehicle is started and air
brake pressure is insufficient to disengage trailer brakes.
It may be necessary to wait over 1 minute for brakes to
release. Bleed excess moisture from air brake reservoir. If
code returns, have John Deere dealer repair as soon as
possible.
CCU 001638.00
Hydraulic Oil Temperature
High
Check hydraulic oil level in sight glass on rear differential.
Inspect transmission/hydraulic oil cooler. If code returns,
have John Deere dealer repair immediately.
CCU 001638.03
CCU 001638.04
Hydraulic System
Hydraulic Oil Temperature Circuit Problem. Have John
Deere dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-7/27
Diagnostic
Trouble Code
Display
Solution
CCU 001638.16
Hydraulic Oil Temperature
High
Check hydraulic oil level in sight glass on rear differential.
Inspect transmission-hydraulic oil cooler. Restart vehicle.
Operate vehicle at rated speed for 1 - 2 minutes. If code
returns, have John Deere dealer repair as soon as
possible.
CCU 001713.00
Hydraulic Oil Filter
Restricted
Check and/or replace hydraulic oil filter. Restart vehicle.
Operate vehicle at rated speed for 1 - 2 minutes. If code
returns, have John Deere dealer repair as soon as
possible.
CCU 001883.0
Rear PTO Speed High
Rear PTO Shaft Turning Too Fast. Check that PTO shaft
and PTO speed lever match. Restart vehicle. If code
returns, have John Deere Dealer repair at earliest
convenience.
Page 13
CCU 001883.01
Rear PTO System
Rear PTO Underspeed. Check that PTO shaft and PTO
speed lever match. Have John Deere dealer repair if code
returns at earliest convenience.
CCU 001883.13
Rear PTO System
Rear PTO Calibration not Performed or Incomplete. Have
John Deere dealer repair as soon as possible.
CCU 002392.05
Backup alarm system
Back Up Alarm Circuit Fault. Have John Deere dealer
repair as soon as possible.
CCU 523851.02
Implement Management
System
IMS Aborted Sequence Because of Lack of Response from
Hitch/SCV Control Unit. Have John Deere dealer repair at
earliest convenience.
CCU 524016.04
Electrical system
CCU Switched Supply Voltage Low. Have John Deere
dealer repair at earliest convenience.
CCU 524223.03
Differential Lock System
Leaving Differential Lock on for more than 15 seconds will
generate this code. Have John Deere dealer repair at
earliest convenience.
CCU 524224.14
PTO Switch
PTO is Disabled but the Switch is on. Turn all PTO
switches OFF. Restart vehicle. If code returns, have John
Deere dealer repair at earliest convenience.
CCU 524235.05
MFWD System
MFWD Circuit Problem. Have John Deere dealer repair at
earliest convenience.
CCU 524236.31
Implement Management
System
IMS was turned off while commanding an MFWD mode
other than what the MFWD switch has commanded. Have
John Deere dealer repair at earliest convenience.
CCU 524251.31
Rear PTO ON
PTO Engaged while Operator not Present. Have John
Deere dealer repair as soon as possible.
Page 14
CCU 524252.05
Rear PTO System
Rear PTO Solenoid Circuit Problem. Have John Deere
dealer repair at earliest convenience.
CCU 524255.31
Remote PTO Enabled
Rear PTO Remote Enable Switch ON and Rear PTO Fender
Switch OFF. This is normal and serves as a safety alert.
Cab Load Center (CLC) Diagnostic Trouble Codes
OU1092A,0000020 -19-28SEP06-8/27
Diagnostic
Trouble Code
Display
Solution
CLC 000158.00
CLC 000158.01
CLC 000158.17
CLC 000158.18
Electrical System
CAB Switched Supply Voltage Problem. Have John Deere
dealer repair as soon as possible.
CLC 002050.06
Electrical System
CLC Circuit Current High. Remove all operator customized
accessories such as flood lights, hazard lights and window
wipers. Have John Deere dealer repair at earliest
convenience.
CLC 002360.05
CLC 002360.06
Lighting System
Rear Fender Flood Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
Page 15
CLC 002362.05
CLC 002362.06
Lighting System
Rear Roof Flood Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
CLC 002364.05
CLC 002364.06
Lighting System
Mid Body Flood Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
CLC 002366.05
CLC 002366.06
Lighting System
Side Roof Flood Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
CLC 002368.05
CLC 002368.06
Lighting System
Left Turn Signal Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
CLC 002370.05
CLC 002370.06
Lighting System
Right Turn Signal Light Circuit Current Problem. Check
condition of light bulb. If code still exists, have John Deere
dealer repair at earliest convenience.
CLC 002372.05
CLC 002372.06
Lighting System
Brake Light Circuit Current Problem. Check condition of
light bulb. If code still exists, have John Deere dealer
repair at earliest convenience.
CLC 002378.05
CLC 002378.06
Lighting System
Tail Light Circuit Current Problem. Check condition of light
bulb. If code still exists, have John Deere dealer repair at
earliest convenience.
CLC 002394.05
CLC 002394.06
Lighting System
Trailer Flood Light Circuit Overload or Short Circuit.
Unplug 7-pin connector to verify code still exists. Have
John Deere dealer repair at earliest convenience.
CLC 002863.02
Wiper System
Front Wiper Switch Circuit Fault. Cycle switch ON and
OFF. If code still exists, have John Deere dealer repair at
earliest convenience.
Page 16
CLC 002865.02
Wiper System
Rear Wiper Switch Circuit Fault. Cycle switch ON and OFF.
If code still exists, have John Deere dealer repair at
earliest convenience.
CLC 002872.02
Lighting System
Main Light Switch Circuit Fault. Cycle switch ON and OFF.
If code still exists, have John Deere dealer repair at
earliest convenience.
CLC 522310.06
Electrical System
ELX Output Circuit Current High. Have John Deere dealer
repair at earliest convenience.
CLC 522433.05
CLC 522433.06
Wiper System
Rear Wiper Motor Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
CLC 522434.05
CLC 522434.06
Wiper System
Front Wiper Motor Low Speed Circuit Current Problem.
Have John Deere dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-9/27
Diagnostic
Trouble Code
Display
Solution
CLC 522435.05
CLC 522435.06
Wiper System
Front Wiper Motor High Speed Circuit Current Problem.
Have John Deere dealer repair at earliest convenience.
CLC 523907.02
PTO System
PTO Remote Enable Switch Problem. Have John Deere
dealer repair at earliest convenience.
CLC 524016.06
Electrical System
Communication Bus or Vehicle Load Center Wakeup
Circuit Current High. Have John Deere dealer repair at
earliest convenience.
Page 17
CLC 524035.02
Operator Controls
Transmission Selector Circuit Fault. Have John Deere
dealer repair at earliest convenience.
CLC 524037.02
Operator Controls
Auto Mode and Brake Assist Mode High. Have John Deere
dealer repair at earliest convenience.
Engine Control Unit Diagnostic Trouble Codes (ECU)
ECU 000097.03
ECU 000097.04
Engine System
Water In Fuel Signal Problem. Have John Deere dealer
repair as soon as possible.
ECU 000097.16
Engine Water Separator
Full
Remove water from separator.
ECU 000100.01
Engine Oil Pressure Low
Check engine oil level. If code returns, have John Deere
dealer repair immediately.
ECU 000100.03
ECU 000100.04
Engine System
Engine Oil Pressure Input Voltage Problem. Have John
Deere dealer repair as soon as possible.
ECU 000100.18
Engine Oil Pressure Low
Check engine oil level. If code returns, have John Deere
dealer repair as soon as possible.
ECU 000100.31
Engine Oil Pressure
Sensor Indicates Oil Pressure When Engine Is OFF. Have
John Deere dealer repair at earliest convenience.
ECU 000102.02
Engine System
Manifold Air Pressure Sensor Problem. Have John Deere
dealer repair at earliest convenience.
ECU 000102.03
ECU 000102.04
Engine System
Manifold Air Pressure Voltage Problem. Have John Deere
dealer repair as soon as possible.
Page 18
ECU 000103.00
Engine System
Turbo Speed Overspeed. If operating at high altitude,
reduce load on engine. If problem continues, have John
Deere dealer repair as soon as possible.
ECU 000103.05
ECU 000103.06
ECU 000103.08
ECU 000103.31
Engine System
Turbo Speed Error. Have John Deere dealer repair as soon
as possible.
ECU 000105.00
Engine Air Temperature
High
Intake Air Temperature High. Check coolant level. Inspect
and clean radiator. If code returns, have John Deere
dealer repair immediately.
ECU 000105.03
ECU 000105.04
Engine System
Manifold Air Temperature Voltage Problem. Have John
Deere dealer repair as soon as possible.
ECU 000105.15
Engine Air Temperature
High
Manifold Air Temperature is above Specification. Check
coolant level. Inspect and clean radiator. If code returns,
have John Deere dealer repair as soon as possible.
OU1092A,0000020 -19-28SEP06-10/27
Diagnostic
Trouble Code
Display
Solution
ECU 000105.16
Engine Air Temperature
High
Manifold Air Temperature Moderately High. Check
coolant level. Inspect and clean radiator. If code returns,
have John Deere dealer repair as soon as possible.
ECU 000108.02
Engine System
Barometric Pressure Sensor Problem. Have John Deere
dealer repair at earliest convenience.
Page 19
ECU 000110.00
Engine Coolant
Temperature High
Check coolant level. Inspect and clean radiator. If code
returns, have John Deere dealer repair immediately.
ECU 000110.03
ECU 000110.04
Engine System
Engine Coolant Temperature Input Voltage Problem.
Have John Deere dealer repair as soon as possible.
ECU 000110.15
Engine Coolant
Temperature High
Check coolant level. Inspect and clean radiator. If code
returns, have John Deere dealer repair at earliest
convenience.
ECU 000110.16
Engine Coolant
Temperature High
Check coolant level. Inspect and clean radiator. If code
returns, have John Deere dealer repair as soon as
possible.
ECU 000110.17
Engine Coolant
Temperature Low
Engine Coolant Temperature Low. Warm up engine. If
problem continues, have John Deere dealer repair as
soon as possible.
ECU 000157.03
ECU 000157.04
Engine System
Fuel Rail Pressure Input Voltage Problem. Have John
Deere dealer repair immediately.
ECU 000157.10
Engine System
Fuel Rail Pressure Loss Detected. Have John Deere dealer
repair as soon as possible.
ECU 000157.17
Engine System
Fuel Rail Pressure Not Developed. Have John Deere
dealer repair as soon as possible.
ECU 000158.17
Engine System
Engine Control Unit Power Down Error. Have John Deere
dealer repair at earliest convenience.
ECU 000174.00
Fuel Temperature High
Fuel Temperature High. Check coolant level. Inspect and
clean radiator. Check to see if code returns. Have John
Deere dealer repair immediately.
Page 20
ECU 000174.03
ECU 000174.04
Engine System
Fuel Temperature Input Voltage Problem. Have John
Deere dealer repair as soon as possible.
ECU 000174.16
Fuel Temperature High
Check coolant level. Inspect and clean radiator and fuel
cooler. If code returns, have John Deere dealer repair as
soon as possible.
ECU 000189.00
No text
Engine Speed Derate.
ECU 000190.00
Engine Speed High
Result of downshifting, throttle back. If code returns,
have John Deere dealer repair immediately.
ECU 000237.02
ECU 000237.13
ECU 000237.31
Identification System
Vehicle Serial Number Invalid. Have John Deere dealer
repair as soon as possible.
ECU 000412.00
Engine System
EGR Temperature Sensor Input Voltage Problem. Most
Sever Level. Have John Deere dealer repair immediately.
OU1092A,0000020 -19-28SEP06-11/27
Diagnostic
Trouble Code
Display
Solution
ECU 000412.03
ECU 000412.04
Engine System
EGR Temperature Sensor Input Voltage Problem. Have
John Deere dealer repair as soon as possible.
ECU 000412.15
ECU 000412.16
Engine System
EGR Temperature Higher than Expected. Have John Deere
dealer repair as soon as possible.
Page 21
ECU 000611.03
ECU 000611.04
Engine System
Electronic Injector Wiring Problem. Have John Deere
dealer repair as soon as possible.
ECU 000627.01
Engine System
Electronic Injector Supply Voltage Problem. Have John
Deere dealer repair as soon as possible.
ECU 000629.12
Engine System
ECU Memory Problem. Have John Deere dealer repair as
soon as possible.
ECU 000629.13
Engine System
ECU Programming Error. Have John Deere dealer repair
immediately.
ECU 000636.05
Engine System
Cam Sensor Open. Have John Deere dealer repair as soon
as possible.
ECU 000636.06
Engine System
Cam Sensor Shorted. Have John Deere dealer repair as
soon as possible.
ECU 000636.02
ECU 000636.08
ECU 000636.10
Engine System
Pump Position Sensor Problem. Have John Deere dealer
repair at earliest convenience.
ECU 000637.02
ECU 000637.05
ECU 000637.06
ECU 000637.07
Engine System
Crank Position Sensor Problem. Have John Deere dealer
repair as soon as possible.
ECU 000637.08
ECU 000637.10
Engine System
Crank Position Input Problem. Have John Deere dealer
repair as soon as possible.
ECU 000641.04
Engine System
Turbo Actuator Supply Voltage Low or Intermittent. Have
John Deere dealer repair as soon as possible.
Page 22
ECU 000641.05
ECU 000641.13
Engine System
Have John Deere dealer repair as soon as possible.
ECU 000641.12
Engine System
Communication on Error to Turbo. Have John Deere
dealer repair as soon as possible.
ECU 000641.16
Engine System
Turbo Actuator Over Temperature. Have John Deere
dealer repair as soon as possible.
ECU 000647.05
Fan System
Upper Fan Drive Output 1 Shorted or Open. Inspect
wiring leads on solenoid coil above fan drive piston
housing. Have John Deere dealer repair as soon as
possible.
ECU 000651.02
ECU 000651.13
Engine System
Electronic Fuel Injector Problem. Have John Deere dealer
repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-12/27
Diagnostic
Trouble Code
Display
Solution
ECU 000651.05
ECU 000651.06
ECU 000651.07
ECU 000652.02
ECU 000652.05
ECU 000652.06
ECU 000652.07
ECU 000652.13
ECU 000653.02
ECU 000653.05
ECU 000653.06
ECU 000653.07
ECU 000653.13
ECU 000654.02
ECU 000654.05
Engine System
Electronic Fuel Injector Problem. Have John Deere dealer
repair as soon as possible.
Page 23
ECU 000654.06
ECU 000654.07
ECU 000654.13
ECU 000655.02
ECU 000655.05
ECU 000655.06
ECU 000655.07
ECU 000655.13
ECU 000656.02
ECU 000656.05
ECU 000656.06
ECU 000656.07
ECU 000656.13
ECU 000676.03
ECU 000676.05
Engine System
Glow Plug Relay Output Problem. Have John Deere dealer
repair as soon as possible.
ECU 001075.05
Fuel Supply System
Electric Lift Pump in Fuel Filter Base Short/Open. Have
John Deere dealer repair at earliest convenience.
ECU 001110.31
Engine System
Engine Protection Shutdown. Have John Deere dealer
repair as soon as possible.
ECU 001136.00
Engine System
ECU Temperature High. Check area around ECU for
adequate air flow. If problem continues, have John Deere
dealer repair immediately.
ECU 001136.16
Engine System
Internal ECU Temperature High. Check area around ECU
for adequate air flow. If problem continues, have John
Deere dealer repair as soon as possible.
ECU 001172.03
ECU 001172.04
Engine System
Compressor Inlet Temperature Input Voltage Problem.
Have John Deere dealer repair at earliest convenience.
ECU 001180.00
Engine System
Exhaust Temperature is High. Have John Deere dealer
repair immediately.
Page 24
ECU 001180.16
Engine System
Exhaust Temperature is Higher than Specification. Have
John Deere dealer repair as soon as possible.
OU1092A,0000020 -19-28SEP06-13/27
Diagnostic
Trouble Code
Display
Solution
ECU 001347.03
ECU 001347.05
Engine System
Pump control valve problem. Have John Deere dealer
repair as soon as possible.
ECU 001347.07
Fuel Filter
Fuel Rail Pressure Control Problem. Check fuel filter, If
code returns, have John Deere dealer repair as soon as
possible.
ECU 001569.31
Fuel Power Derated
One of the Derate Conditions Exists on Engine. Have John
Deere dealer repair at earliest convenience.
ECU 001639.01
ECU 001639.16
ECU 001639.18
ECU 002005.09
Fan System
Fan Speed Signal Problem. Have John Deere dealer repair
at earliest convenience.
ECU 002005.14
Communication System
Communication Error. Allow tractor to run for 10 minutes
to clear code.
ECU 002030.09
Communication System
CAB Message Missing. Have John Deere dealer repair at
earliest convenience.
ECU 002049.09
ECU 002071.09
Communication System
Control Unit Signal Missing. Have John Deere dealer
repair at earliest convenience.
Page 25
ECU 002630.00
Engine System
Charge Air Outlet Temperature Higher than Expected
(Most Severe). Have John Deere dealer repair
immediately.
ECU 002630.03
ECU 002630.04
Engine System
Charge Air Outlet Temperature Input Voltage Problem.
Have John Deere dealer repair as soon as possible.
ECU 002630.15
ECU 002630.16
Engine System
Charge Air Outlet Temperature Higher than Expected
(Less Severe). Have John Deere dealer repair as soon as
possible.
ECU 002659.02
ECU 002659.15
ECU 002659.17
Engine System
EGR Problem. Have John Deere dealer repair as soon as
possible.
ECU 002790.16
Engine System
Compressor Outlet Temperature High. Have John Deere
dealer repair as soon as possible.
ECU 002791.02
ECU 002791.03
ECU 002791.04
ECU 002791.07
ECU 002791.13
ECU 002791.14
ECU 002791.31
Engine System
EGR Valve Error. Have John Deere dealer repair as soon as
possible.
ECU 002795.07
ECU 002795.12
Engine System
Variable Geometry Turbo Control Error. Have John Deere
dealer repair as soon as possible.
ECU 003509.03
ECU 003509.04
Engine System
Fuel Rail Pressure Sensor Supply Voltage Problem. Have
John Deere dealer repair immediately.
OU1092A,0000020 -19-28SEP06-14/27
Page 26
Diagnostic
Trouble Code
Display
Solution
ECU 003510.03
ECU 003510.04
ECU 003511.03
ECU 003511.04
ECU 003512.03
ECU 003512.04
ECU 003513.03
ECU 003513.04
Engine System
ECU Sensor Voltage Problem. Have John Deere dealer
repair as soon as possible.
ECU 600006.31
Engine System
ECU Default DTC. Have John Deere dealer repair at
earliest convenience.
Hitch Control Unit Diagnostic Trouble Codes (HCU)
HCU 000158.04
HCU 000168.04
Electrical System
HCU Supply Voltage Low. Visually inspect around the
batteries and alternator for any visual signs of damage or
accumulated debris. Check fuse F30. If code still exists,
have John Deere dealer repair at earliest convenience.
HCU 000630.13
Rear Hitch System
HCU Not Calibrated. Have John Deere dealer repair at
earliest convenience.
HCU 001079.03
HCU 001079.04
Rear Hitch System
HCU Sensor Supply Voltage Problem. Have John Deere
dealer repair at earliest convenience.
HCU 001873.02
HCU 001873.03
HCU 001873.04
HCU 001873.11
Rear Hitch System
Rear Hitch Position Sensor Problem. Have John Deere
dealer repair at earliest convenience.
HCU 001873.13
Rear Hitch System
HCU Calibration Fault/Rear Hitch Position Sensor Circuit.
Have John Deere dealer calibrate hitch at earliest
convenience.
Page 27
HCU 001881.03
HCU 001881.04
HCU 001881.13
Rear Hitch System
Rear Hitch Draft Sensor Problem. Have John Deere dealer
repair at earliest convenience.
HCU 002003.09
Rear Hitch System
Vehicle Speed Update Fault. Have John Deere dealer
repair at earliest convenience.
HCU 002005.09
Communication System
ACU Message Missing. Have John Deere dealer repair at
earliest convenience.
HCU 002071.09
Rear Hitch System
CCU Message Missing. Have John Deere dealer repair at
earliest convenience.
HCU 521001.02
HCU 521001.05
HCU 521001.06
HCU 521001.07
HCU 521001.11
HCU 521002.05
HCU 521002.07
HCU 521002.06
Rear Hitch System
Rear Hitch Circuit Problem. Have John Deere dealer repair
at earliest convenience.
HCU 523652.02
Hydraulic System
Wire Connector Fault. Have John Deere dealer repair at
earliest convenience.
OU1092A,0000020 -19-28SEP06-15/27
Diagnostic
Trouble Code
Display
Solution
HCU 523788.02
Rear Hitch System
Hydraulic Option Configuration Problem. Hook up last
used implement and cycle key switch ON and OFF to
reset.
Page 28
HCU 523910.02
Rear Hitch System
Control Unit Problem. Have John Deere dealer repair at
earliest convenience.
HCU 523952.31
Rear Hitch System
Operator Trying to use Hitch while Disabled or not
Available. Have John Deere dealer repair at earliest
convenience.
HCU 524016.04
Rear Hitch System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
HCU 524212.19
HCU 524212.31
Hydraulic System
Rear Hitch Control Lever Problem. Have John Deere
dealer repair at earliest convenience.
Instrument Control Unit Diagnostic Trouble Codes (ICU)
ICU 002000.09
Communication System
ECU Message Missing. Check fuse F9. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002003.09
Communication System
PTI or PTQ Message Missing. Check fuse F6 for IVT or F35
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
ICU 002011.09
Communication System
BRC Message Missing. Have John Deere dealer repair at
earliest convenience.
ICU 002005.09
Communication System
ACU Message Missing. Check fuse F13 for IVT or F35 for
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
ICU 002019.09
Communication System
SSU Message Missing. Have John Deere dealer repair at
earliest convenience.
Page 29
ICU 002020.09
Communication System
SFA Message Missing. Check fuse F24. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002025.09
Communication System
ATC Message Missing. Check fuse F42. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002030.09
Communication System
VLC Message Missing. Have John Deere dealer repair as
soon as possible.
ICU 002034.09
Communication System
SCU Message Missing. Check fuse F24. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002035.09
Communication System
HCU Message Missing. Have John Deere dealer repair as
soon as possible.
ICU 002036.09
Communication System
PTF Message Missing. Check fuse F15. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002049.09
Communication System
CAB Message Missing. Check fuse F35. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002050.09
Communication System
CLC Message Missing. Have John Deere dealer repair as
soon as possible.
OU1092A,0000020 -19-28SEP06-16/27
Page 30
Diagnostic
Trouble Code
Display
Solution
ICU 002054.09
Communication System
ASU Message Missing. Check fuses F35 for IVT and F45
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
ICU 002071.09
Communication System
CCU Message Missing. Check fuses F6 for IVT and F35 for
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
ICU 002129.09
Communication System
ICU Message Missing. Check fuse F28. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002213.09
Communication System
SCO Message Missing. Check fuse F24. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002227.09
Communication System
SUP Message Missing. Check fuse F23. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002240.09
Communication System
TEC Message Missing. Check fuse F23. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
ICU 002255.09
Communication System
No CAN messages received from any source address
within time-out period.
ICU 523971.14
Communication System
Engine is Currently too Cold to Start and is Firing the Glow
Plugs in Preparation for Starting. Engine may be safely
started at conclusion of countdown.
Front PTO Control Unit Diagnostic Trouble Codes (PTF)
Page 31
PTF 000168.04
Front PTO System
PTF Supply Voltage Low. Have John Deere dealer repair at
earliest convenience.
PTF 001882.00
Front PTO System
Front PTO Shaft is Turning too Fast. Restart vehicle.
Engage Front PTO. Set engine to full throttle. If code
returns, have John Deere dealer repair as soon as
possible.
PTF 001882.01
Front PTO System
Front PTO Underspeed Detected. Restart vehicle and
Engage Front PTO. Set engine to full throttle. If code
returns, have John Deere dealer repair at earliest
convenience.
PTF 001882.13
Front PTO System
Front PTO Not Calibrated. Have John Deere dealer repair
at earliest convenience.
PTF 523904.31
Front PTO On
PTO Engaged While Operator Not Seated. Sit in operators
seat. Restart vehicle and cycle front PTO switch. If code
returns, have John Deere dealer repair as soon as
possible.
PTF 523905.02
Front PTO System
Front PTO Circuit Problem. Have John Deere dealer repair
at earliest convenience.
PTF 523906.03
PTF 523906.04
Front PTO System
Front PTO Oil Temperature Circuit Problem. Have John
Deere dealer repair at earliest convenience.
PTF 524163.09
Front PTO System
Control Unit Problem. Check fuse F35. Restart vehicle. If
code returns, have John Deere dealer repair at earliest
convenience.
PTF 524216.02
PTF 524216.31
Front PTO System
Front PTO Switch Problem. Have John Deere dealer repair
at earliest convenience.
Page 32
OU1092A,0000020 -19-28SEP06-17/27
Diagnostic
Trouble Code
Display
Solution
IVT Transmission Control Unit Diagnostic Trouble Codes (PTI)
PTI 000126.15
PTI 000126.16
Transmission Oil Filter
Restricted
Check condition and service interval of transmission oil
and filter. Restart vehicle. Warm oil to normal operating
temperature. If code returns, have John Deere dealer
repair as soon as possible.
PTI 000127.01
Transmission Oil Pressure
Low
Restart vehicle. Warm oil to normal operating
temperature. If code returns, have John Deere dealer
repair at earliest convenience.
PTI 000127.02
PTI 000127.04
Transmission System
Transmission Pump Pressure Sensor Problem. Have John
Deere dealer repair at earliest convenience.
PTI 000127.18
Transmission Oil Pressure
Low
Transmission Pump Pressure Low. Have John Deere
dealer repair as soon as possible.
PTI 000158.01
PTI 000168.01
Transmission System
Control Unit Supply Voltage Problem. Have John Deere
dealer repair at earliest convenience.
PTI 000190.00
Engine Speed High
Engine Overspeed. Reduce engine RPM. If code returns,
have John Deere dealer repair as soon as possible.
PTI 000190.02
Transmission System
Engine Speed Mismatch. Have John Deere dealer repair at
earliest convenience.
PTI 000191.00
Transmission Speed High
Operating tractor downhill with a heavy rear load may
cause the rear differential to overspeed the transmission
output shaft. Slow vehicle. If code returns, have John
Deere dealer repair as soon as possible.
Page 33
PTI 000191.02
Transmission System
Transmission Speed Sensors and Calculated "Expected"
Speed Differ by more than 200 rpm. Have John Deere
dealer repair at earliest convenience.
PTI 000619.05
Park System
Park Brake Solenoid Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTI 000734.05
PTI 000735.05
PTI 000736.05
Transmission System
Clutch/Brake Solenoid Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTI 000754.18
PTI 000755.18
PTI 000756.18
Transmission Oil Pressure
Low
Clutch Enable Pressure Problem. Have John Deere dealer
repair as soon as possible.
PTI 001079.04
Transmission System
Control Unit Sensor Voltage Problem. Have John Deere
dealer repair at earliest convenience.
PTI 002000.09
Communication System
ECU Message Missing. Have John Deere dealer repair at
earliest convenience.
PTI 002005.09
Communication System
ACU Message Missing. Have John Deere dealer repair at
earliest convenience.
PTI 524042.00
Transmission Oil Filter
Restricted
Check the condition and service interval of the
transmission oil and filter. If code returns, have John
Deere dealer repair immediately.
OU1092A,0000020 -19-28SEP06-18/27
Page 34
Diagnostic
Trouble Code
Display
Solution
PTI 524042.16
PTI 524227.00
PTI 524227.16
Transmission Oil Filter
Restricted
Transmission Oil Filter Bypassed. Check the condition and
service interval of the transmission oil and filter. If code
returns, have John Deere dealer repair as soon as
possible.
PTI 524226.08
Transmission System
Direction Sensing Incorrect. Have John Deere dealer
repair as soon as possible.
PTI 524228.05
PTI 524228.11
Transmission System
Park Sump Block Circuit Problem. Have John Deere dealer
repair at earliest convenience.
PTI 524229.05
Transmission System
Hydro Control Solenoid Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTI 524230.05
Park System
Clutch Enable Solenoid Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTI 524232.01
Park System
Park Brake Pressure Low/Gear Commanded. Stop engine,
have John Deere dealer repair immediately.
PTI 524232.02
PTI 524232.04
Transmission System
Park Brake Pressure Sensor Problem. Have John Deere
dealer repair at earliest convenience.
PTI 524232.14
Transmission Oil Pressure
Low
Park Brake Pressure Low in Come Home Mode. Perform
Park Brake Release Procedure (see section 80). Wait 5-10
minutes. If code returns, have John Deere dealer repair
immediately.
PTI 524232.16
PTI 524232.17
Park System
Park Brake Pressure Problem. Have John Deere dealer
repair as soon as possible.
Page 35
PTI 524232.18
Transmission Oil Pressure
Low
Park Brake Pressure Low. Have John Deere dealer repair
as soon as possible.
PTI 524233.00
Transmission System
Hydro Fixed Unit Overspeed. Have John Deere dealer
repair as soon as possible.
PTI 524233.07
PTI 524233.15
PTI 524233.16
Transmission System
Hydro Speed Sensor Problem. Have John Deere dealer
repair at earliest convenience.
PTI 524234.02
PTI 524234.04
Transmission System
Clutch Pressure Circuit Problem. Have John Deere dealer
repair at earliest convenience.
PTI 524237.31
Transmission System
Neutral and Park or Scroll Switches on During Start-Up.
Restart vehicle. If code returns, have John Deere dealer
repair at earliest convenience.
PTI 524238.31
Transmission Lever Not in
Park
Left-Hand Reverser Lever Not in Park or Neutral at Power
Up. Place lever in park or neutral. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
PTI 524239.31
Transmission System
No Motion / Engine Running. Have John Deere dealer
repair at earliest convenience.
PTI 524240.14
Transmission System
No Vehicle Motion for 5 Seconds After "Come-Home"
Mode Selected. Have John Deere dealer repair at earliest
convenience.
OU1092A,0000020 -19-28SEP06-19/27
Page 36
Diagnostic
Trouble Code
Display
Solution
PTI 524241.02
Transmission System
Carrier or Fixed Unit Speed Incorrect. Have John Deere
dealer repair at earliest convenience.
PTI 524242.00
Transmission Oil Pressure
High
Transmission Park and Enable Pressures High. Have John
Deere dealer repair as soon as possible.
PTI 524243.31
PTI 524244.31
PTI 524245.31
Operator Controls
Control Unit Command Problem. Have John Deere dealer
repair at earliest convenience.
PTI 524246.17
Transmission System
Hydro Fixed Unit Speed Low at Start-Up. Have John Deere
dealer repair at earliest convenience.
PTI 524247.17
Transmission System
Carrier Speed Circuit Problem. Have John Deere dealer
repair at earliest convenience.
PTI 524248.31
Transmission System
Motion Detected with Park Brake Engaged. Restart
vehicle. Park vehicle on a slight incline. Place left-hand
reverser in PARK. Let vehicle sit for 1-2 minutes. If code
returns, have John Deere dealer repair as soon as
possible.
PTI 524249.31
Transmission Not in Park
Operator Not Present with Transmission in Neutral. Sit in
seat. If code returns, have John Deere dealer repair as
soon as possible.
PTI 524250.31
Transmission System
Park Brake Previously Failed/May Not Hold. Have John
Deere dealer repair as soon as possible.
PTI 524253.02
Transmission System
Control Unit Not Commanding Park at Start-Up. Place lefthand reverser in PARK. Restart vehicle. If code returns,
have John Deere dealer repair at earliest convenience.
Page 37
PTI 524254.03
PTI 524254.04
Transmission System
Transmission Enable Relay Circuit Voltage Problem. Verify
that there is NOT a fuse installed in F5 location. Have
John Deere dealer repair at earliest convenience.
PowrQuad Plus Transmission Control Unit Diagnostic Trouble Codes (PTQ)
PTQ 000084.14
Transmission System
PTQ Wheel Speed Message Missing. Have John Deere
dealer repair as soon as possible.
PTQ 000126.16
Transmission Oil Filter
Restricted
Check condition and service interval of transmission oil
filter. Restart vehicle. If code returns, have John Deere
dealer repair as soon as possible.
PTQ 000127.01
Transmission Oil Pressure
Low
Check transmission fluid level in sight glass on rear
differential case. Restart vehicle. If code returns, have
John Deere dealer repair immediately.
PTQ 000158.04
Electrical System Voltage
Low
Visually inspect around the batteries and alternator for
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair as soon as
possible.
PTQ 000190.18
Transmission System
PTQ Engine Speed Low. Have John Deere dealer repair as
soon as possible.
PTQ 000191.17
Transmission System
Transmission Underspeed. Have John Deere dealer repair
at earliest convenience.
OU1092A,0000020 -19-28SEP06-20/27
Diagnostic
Trouble Code
Display
Solution
Page 38
PTQ 000734.05
PTQ 000735.05
PTQ 000736.05
PTQ 000737.05
Transmission System
Transmission Sensor Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTQ 002000.09
Communication System
ECU Message Missing. Check fuse F9. Restart vehicle. If
code returns, have John Deere dealer repair as soon as
possible.
PTQ 002005.09
Communication System
ACU Message Missing. Have John Deere dealer repair as
soon as possible.
PTQ 002049.09
Communication System
CAB Message Missing. Have John Deere dealer repair as
soon as possible.
PTQ 002050.09
Communication System
CLC Message Missing. Have John Deere dealer repair as
soon as possible.
PTQ 002129.09
Communication System
ICU Message Missing. Have John Deere dealer repair as
soon as possible.
PTQ 523953.02
Operator Controls
Speed Control Lever Circuit Problem. Have John Deere
dealer repair at earliest convenience.
PTQ 523960.31
Operator Not in Seat
Operator Not Seated During Reverser Command. Have
John Deere dealer repair at earliest convenience.
PTQ 523961.07
Operator Controls
Range Lever Park/Reverser Lever Gear Problem. Have
John Deere dealer repair at earliest convenience.
PTQ 523966.31
Transmission Come Home
Active
Check F5 slot for fuse. Fuse should not be installed unless
vehicle is in Come Home mode. With fuse removed,
operate vehicle for 5 minutes. If code returns, have John
Deere dealer repair as soon as possible.
Page 39
PTQ 524191.05
Trailer Brake System
Trailer Air Brake Valve Problem. Have John Deere dealer
repair as soon as possible.
PTQ 524230.03
PTQ 524230.04
PTQ 524230.05
PTQ 524234.03
PTQ 524234.04
Transmission System
Clutch Enable Circuit Problem. Have John Deere dealer
repair at earliest convenience.
PTQ 524254.04
Transmission System
Transmission Enable Relay Circuit Voltage Low. Have John
Deere dealer repair at earliest convenience.
Optional SCV Control Unit Diagnostic Trouble Codes (SCO)
SCO 000158.04
SCO 000168.04
Hydraulic System
Control Unit Supply Voltage Problem. Visually inspect
around the batteries and alternator for any visual signs of
damage or accumulated debris. Check fuses F12, F24 and
F51. Restart vehicle. If code returns, have John Deere
dealer repair at earliest convenience.
SCO 001963.05
SCO 001975.05
Hydraulic System
Flow Control Circuit Problem. Have John Deere dealer
repair at earliest convenience.
SCO 002005.09
Communication System
ACU Message Missing. Have John Deere dealer repair at
earliest convenience.
OU1092A,0000020 -19-28SEP06-21/27
Diagnostic
Trouble Code
Display
Solution
SCO 002071.09
Page 40
Communication System
CCU Message Missing. Have John Deere dealer repair at
earliest convenience.
SCO 521000.02
Hydraulic System
Front Hitch External Switch Circuit Problem. Inspect front
hitch switch, harness and connectors. Restart vehicle.
Cycle front hitch switch through all positions. If code
returns, have John Deere dealer repair at earliest
convenience.
SCO 523652.02
Hydraulic System
Wire Connector Fault. Incompatible connection. Have
John Deere dealer repair at earliest convenience.
SCO 523662.05
SCO 523662.06
SCO 523663.05
SCO 523663.06
Hydraulic System
Auxiliary Valve Current Problem. Have John Deere dealer
repair at earliest convenience.
SCO 523695.02
SCO 523695.19
SCO 523696.02
SCO 523696.19
Hydraulic System
External Control Message Problem. Have John Deere
dealer repair at earliest convenience.
SCO 523787.03
SCO 523787.04
Hydraulic System
Auxiliary Solenoid Voltage Problem. Visually inspect
around the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
SCO 523910.02
Hydraulic System
Control Unit Problem. Have John Deere dealer repair at
earliest convenience.
SCO 523930.05
SCO 523930.06
SCO 523931.05
SCO 523931.06
Hydraulic System
SCV Directional Valve Solenoid Current Problem. Have
John Deere dealer repair at earliest convenience.
Page 41
SCO 523936.05
SCO 523936.06
SCO 523937.05
SCO 523937.06
Hydraulic System
Flow Control Valve Solenoid Current Problem. Have John
Deere dealer repair at earliest convenience.
SCO 523942.31
SCV VI On
Operator out of seat with SCV VI on.
SCO 523943.31
SCV V On
Operator out of seat with SCV V on.
SCO 524016.03
SCO 524016.04
Hydraulic System
Control Unit Supply Voltage Problem. Visually inspect
around the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
SCV Control Unit Diagnostic Trouble Codes (SCU)
SCU 000158.04
SCU 000168.04
Hydraulic System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Check fuses F24, F44 and
F51. Restart vehicle. If code returns, have John Deere
dealer repair at earliest convenience.
SCU 001079.03
SCU 001079.04
Hydraulic System
Control Unit Sensor Supply Voltage Problem. Have John
Deere dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-22/27
Diagnostic
Trouble Code
Display
Solution
SCU 001915.05
SCU 001927.05
SCU 001939.05
SCU 001951.05
Hydraulic System
Flow Control Solenoid Current Problem. Have John Deere
dealer repair at earliest convenience.
Page 42
SCU 002005.09
Communication System
ACU Message Missing. Check fuse F13. Restart vehicle. If
code returns, have John Deere dealer repair at earliest
convenience.
SCU 002049.09
Communication System
CAB Message Missing. Have John Deere dealer repair at
earliest convenience.
SCU 002071.09
Communication System
CCU Message Missing. Have John Deere dealer repair at
earliest convenience.
SCU 523652.02
Hydraulic System
Wire Connector Fault. Have John Deere dealer repair at
earliest convenience.
SCU 523693.02
SCU 523693.19
SCU 523694.02
SCU 523694.19
Hydraulic System
SCV External Control Message Problem. Have John Deere
dealer repair at earliest convenience.
SCU 523786.03
SCU 523786.04
SCU 523786.07
Hydraulic System
Remote Position Sensor Problem. Have John Deere dealer
repair at earliest convenience.
SCU 523787.03
SCU 523787.04
Hydraulic System
Control Unit Switched Supply Voltage Problem. Visually
inspect around the batteries and alternator for any visual
signs of damage or accumulated debris. Restart vehicle. If
code returns, have John Deere dealer repair at earliest
convenience.
SCU 523910.02
Hydraulic System
Control Unit Problem. Have John Deere dealer repair at
earliest convenience.
SCU 523923.31
Hydraulic System
Control Lever Problem. Have John Deere dealer repair at
earliest convenience.
Page 43
SCU 523932.05
SCU 523932.06
SCU 523933.05
SCU 523933.06
SCU 523934.05
SCU 523934.06
SCU 523935.05
SCU 523935.06
Hydraulic System
Direction Control Solenoid Circuit Current Problem. Have
John Deere dealer repair at earliest convenience.
SCU 523938.05
SCU 523938.06
SCU 523939.05
SCU 523939.06
SCU 523940.05
SCU 523940.06
SCU 523941.05
SCU 523941.06
Hydraulic System
Flow Control Solenoid Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-23/27
Diagnostic
Trouble Code
Display
Solution
SCU 523944.31
SCV IV On
Operator out of seat with SCV IV on.
SCU 523945.31
SCV III On
Operator out of seat with SCV III on.
SCU 523946.31
SCV II On
Operator out of seat with SCV II on.
SCU 523947.31
SCV I On
Operator out of seat with SCV I on.
SCU 524015.02
SCU 524015.19
Hydraulic System
External Command Message Missing. Have John Deere
dealer repair at earliest convenience.
Page 44
SCU 524016.03
SCU 524016.04
Hydraulic System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
SCU 524038.02
SCU 524038.19
Hydraulic System
External Control Message Missing. Restart vehicle. Cycle
SCV IV Lever through all positions. If code returns, have
John Deere dealer repair at earliest convenience.
SCU 524103.31
SCU 524104.31
SCU 524105.31
Hydraulic System
Control Lever Message Missing. Have John Deere dealer
repair at earliest convenience.
Triple-Link Suspension Control Unit Diagnostic Trouble Codes (SFA)
SFA 000158.04
SFA 000168.04
Front Suspension System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
SFA 001079.03
SFA 001079.04
Front Suspension System
Sensor Supply Voltage Problem. Have John Deere dealer
repair at earliest convenience.
SFA 001079.05
SFA 001079.06
Front Suspension System
SFA Calibration Problem. Have John Deere dealer repair
at earliest convenience.
SFA 002003.09
Communication System
PTI or PTQ Message Missing. Check fuse F6 for IVT or F35
for PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair at earliest convenience.
SFA 002005.09
Communication System
ACU Message Missing. Check fuse F13 for IVT or F35
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair at earliest convenience.
Page 45
SFA 002049.09
Communication System
CAB Message Missing. Check fuse F35. Restart vehicle. If
code returns, have John Deere dealer repair at earliest
convenience.
SFA 523652.02
Hydraulic System
Control Unit Connected to Wrong Harness. Have John
Deere dealer repair at earliest convenience.
SFA 523902.07
SFA 523903.07
Front Suspension System
Suspended Front Axle Not Responding to Commands.
Inspect front axle position sensor for linkage damage.
Restart vehicle. Operate vehicle on rough terrain for 5
minutes. If code returns, have John Deere dealer repair at
earliest convenience.
SFA 523910.02
Front Suspension System
Control Unit Problem. Have John Deere dealer repair at
earliest convenience.
OU1092A,0000020 -19-28SEP06-24/27
Diagnostic
Trouble Code
Display
Solution
SFA 523948.05
SFA 523948.06
SFA 523949.05
SFA 523949.06
Front Suspension System
Front Axle Current Problem. Have John Deere dealer
repair at earliest convenience.
SFA 523950.02
SFA 523950.03
SFA 523950.04
Front Suspension System
Axle Position Sensor Problem. Inspect front axle position
sensor for damage. Have John Deere dealer repair at
earliest convenience.
SFA 524016.04
Front Suspension System
Switched Supply Voltage Problem. Visually inspect around
the batteries and alternator for any visual signs of
damage or accumulated debris. Restart vehicle. If code
Page 46
returns, have John Deere dealer repair at earliest
convenience.
AutoTrac Steering System Control Unit Diagnostic Trouble Codes (SSU)
SSU 000084.09
Communication System
Wheel Speed Message Missing. Have John Deere dealer
repair as soon as possible.
SSU 000168.03
Steering System
Unswitched Supply Voltage Problem. Visually inspect
around the batteries and alternator for any visual signs of
damage or accumulated debris. If code returns, have John
Deere dealer repair as soon as possible.
SSU 000177.09
Communication System
Hydraulic Oil Temperature Message Missing. Restart
vehicle. If code returns, have John Deere dealer repair as
soon as possible.
SSU 000524.09
Identification System
Gear Message Missing. Check fuse F6 for IVT or F35 for
PowrQuad Plus. Restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
SSU 000517.09
Communication System
GPS Speed Message Missing. Check StarFire connector. If
code returns, have John Deere dealer repair as soon as
possible.
SSU 000524.02
Communication System
Selected Gear Message Invalid. Restart vehicle. If code
returns, have John Deere dealer repair at earliest
convenience.
SSU 000630.13
Steering System
Steering Control Unit Not Calibrated. Restart vehicle.
Have John Deere dealer repair as soon as possible.
SSU 001079.03
SSU 001079.04
Steering System
Sensor Supply Voltage Problem. Have John Deere dealer
repair as soon as possible.
Page 47
SSU 001504.09
Communication System
Operator Presence Message Missing. Sit in seat. Restart
vehicle. If code returns, have John Deere dealer repair as
soon as possible.
SSU 001504.14
AutoTrac System
Operator Not Seated while AutoTrac in on. Sit in
operator's seat and restart vehicle. If code returns, have
John Deere dealer repair as soon as possible.
OU1092A,0000020 -19-28SEP06-25/27
Diagnostic
Trouble Code
Display
Solution
SSU 001807.02
SSU 001807.03
SSU 001807.04
SSU 001807.05
SSU 001807.06
SSU 001807.10
SSU 001807.14
Steering System
Steering Wheel Position Sensor Problem. Have John
Deere dealer repair as soon as possible.
SSU 001865.09
Communication System
ELX Message Missing. Have John Deere dealer repair at
earliest convenience.
SSU 522273.00
SSU 522273.01
Steering System
Steering Valve Control Circuit Problem. Have John Deere
dealer repair as soon as possible.
SSU 522387.07
Steering System
Wheel Angle Sensor Problem. Have John Deere dealer
repair as soon as possible.
SSU 522394.09
Communication System
Terrain Compensation Module Message Missing. Check
fuse F23. Restart vehicle. If code returns, have John Deere
dealer repair as soon as possible.
Page 48
SSU 522451.00
SSU 522451.01
SSU 522451.14
Steering System
Steering Angle Sensor Problem. Have John Deere dealer
repair at earliest convenience.
SSU 523698.09
Communication System
Ag Management Solutions (AMS) Display Message
Missing. Have John Deere dealer repair as soon as
possible.
SSU 523766.02
AutoTrac System
AutoTrac Activation Code Invalid. Have John Deere dealer
repair as soon as possible.
SSU 523767.02
AutoTrac System
AutoTrac Resume Switch Circuit Problem. Have John
Deere dealer repair as soon as possible.
SSU 523795.02
AutoTrac System
AutoTrac Steering Valve Workport Connections
Backwards. Have John Deere dealer repair as soon as
possible.
SSU 523795.12
Steering System
Steering Valve or Harness Faulty. Have John Deere dealer
repair as soon as possible.
SSU 523795.13
Steering System
Control Unit Calibration Problem. Have John Deere dealer
repair as soon as possible.
SSU 523810.00
SSU 523810.01
SSU 523821.02
Steering System
Steering Valve Supply Voltage Problem. Have John Deere
dealer repair as soon as possible.
SSU 523824.03
SSU 523824.04
SSU 523824.05
SSU 523824.06
SSU 523824.10
SSU 523824.14
Steering System
Steering Wheel Position Sensor Voltage Problem. Have
John Deere dealer repair as soon as possible.
Page 49
OU1092A,0000020 -19-28SEP06-26/27
Diagnostic
Trouble Code
Display
Solution
SSU 523826.00
SSU 523826.01
SSU 523826.02
SSU 523826.07
SSU 523826.10
SSU 523826.13
SSU 523826.14
Steering System
Main Primary Steering Sensor Problem. Have John Deere
dealer repair at earliest convenience.
SSU 524221.09
Communication System
No Communication Data. Have John Deere dealer repair
at earliest convenience.
Tractor Equipment Control Unit Diagnostic Trouble Codes (TEC)
TEC 522550.14
Incompatible Device
At Least One Non Compliant Device Connected to
Connector. Have John Deere dealer repair as soon as
possible.
Vehicle Load Center Control Unit Diagnostic Trouble Codes (VLC)
VLC 001542.04
Electrical System
Wake Up Signal Voltage Low. Likely an open circuit. Have
John Deere dealer repair at earliest convenience.
VLC 002030.06
Electrical System
VLC Circuit Current High. Remove all operator customized
accessories such as flood lights, hazard lights and window
wipers. Total output excessive. Have John Deere dealer
repair at earliest convenience.
VLC 002050.09
Communication System
CLC Message Missing. Have John Deere dealer repair at
earliest convenience.
Page 50
VLC 002348.06
Lighting System
High Beam Light Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
VLC 002350.06
Lighting System
Low Beam Light Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
VLC 002354.06
Lighting System
Front Outer Flood Light Circuit Current Problem. Have
John Deere dealer repair at earliest convenience.
VLC 002356.06
Lighting System
Front Inner Flood Light Circuit Current Problem. Have
John Deere dealer repair at earliest convenience.
VLC 002388.06
Lighting System
Center Spot Light Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
VLC 522310.06
Electrical System
ELX Output Circuit Current High. Have John Deere dealer
repair at earliest convenience.
VLC 522311.06
Washer System
Rear Washer Pump Circuit Current Problem. Have John
Deere dealer repair as soon as possible.
VLC 522312.06
Washer System
Front Washer Pump Circuit Current Problem. Have John
Deere dealer repair at earliest convenience.
VLC 522620.06
Electrical System
Horn Circuit Current Problem. Have John Deere dealer
repair at earliest convenience.
OU1092A,0000020 -19-28SEP06-27/27
Page 51
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