Check-engine codes
Look up any check-engine code — what it means for your car, what usually causes it, and whether you can keep driving.
AllTransmission · 142Wiring / network · 109Oxygen sensors · 85Fuel · 84Air intake · 74Sensors · 70Valve timing · 57Electrical · 35Emissions · 30Fuel vapour (EVAP) · 28Ignition · 28Cooling · 22Misfire · 16Turbo · 16Brakes / ABS · 10EGR · 10Air conditioning · 7Catalytic converter · 6Airbags / seat belts · 5
network codes
U0001
High Speed CAN Communication Bus
Wiring / networkHigh
U0002
High Speed CAN Communication Bus Performance
Wiring / networkHigh
U0003
High Speed CAN Communication Bus (+) Open
Wiring / networkHigh
U0004
High Speed CAN Communication Bus (+) Low
Wiring / networkHigh
U0005
High Speed CAN Communication Bus (+) High
Wiring / networkHigh
U0006
High Speed CAN Communication Bus (-) Open
Wiring / networkHigh
U0007
High Speed CAN Communication Bus (-) Low
Wiring / networkHigh
U0008
High Speed CAN Communication Bus (-) High
Wiring / networkHigh
U0009
High Speed CAN Communication Bus (-) Shorted To Bus (+)
Wiring / networkHigh
U0010
Medium Speed CAN Communication Bus
Wiring / networkMedium
U0011
Medium Speed CAN Communication Bus Performance
Wiring / networkMedium
U0012
Medium Speed CAN Communication Bus (+) Open
Wiring / networkMedium
U0013
Medium Speed CAN Communication Bus (+) Low
Wiring / networkMedium
U0014
Medium Speed CAN Communication Bus (+) High
Wiring / networkMedium
U0015
Medium Speed CAN Communication Bus (-) Open
Wiring / networkMedium
U0016
Medium Speed CAN Communication Bus (-) Low
Wiring / networkMedium
U0017
Medium Speed CAN Communication Bus (-) High
Wiring / networkMedium
U0018
Medium Speed CAN Communication Bus (-) Shorted To Bus (+)
Wiring / networkMedium
U0019
Low Speed CAN Communication Bus
Wiring / networkMedium
U0020
Low Speed CAN Communication Bus Performance
Wiring / networkMedium
U0021
Low Speed CAN Communication Bus (+) Open
Wiring / networkMedium
U0022
Low Speed CAN Communication Bus (+) Low
Wiring / networkMedium
U0023
Low Speed CAN Communication Bus (+) High
Wiring / networkMedium
U0024
Low Speed CAN Communication Bus (-) Open
Wiring / networkMedium
U0025
Low Speed CAN Communication Bus (-) Low
Wiring / networkMedium
U0026
Low Speed CAN Communication Bus (-) High
Wiring / networkMedium
U0027
Low Speed CAN Communication Bus (-) Shorted To Bus (+)
Wiring / networkMedium
U0100
Lost Communication With ECM/PCM "A"
Wiring / networkHigh
U0101
Lost Communication With TCM
Wiring / networkHigh
U0102
Lost Communication With Transfer Case Control Module
Wiring / networkHigh
U0103
Lost Communication With Gear Shift Module
Wiring / networkHigh
U0104
Lost Communication With Cruise Control Module
Wiring / networkLow
U0105
Lost Communication With Fuel Injector Control Module
Wiring / networkHigh
U0106
Lost Communication With Glow Plug Control Module
Wiring / networkMedium
U0107
Lost Communication With Throttle Actuator Control Module
Wiring / networkHigh
U0108
Lost Communication With Alternative Fuel Control Module
Wiring / networkHigh
U0109
Lost Communication With Fuel Pump Control Module
Wiring / networkHigh
U0110
Lost Communication With Drive Motor Control Module
Wiring / networkHigh
U0111
Lost Communication With Battery Energy Control Module "A"
Wiring / networkHigh
U0112
Lost Communication With Battery Energy Control Module "B"
Wiring / networkHigh
U0113
Lost Communication With Emissions Critical Control Information
Wiring / networkMedium
U0114
Lost Communication With Four-Wheel Drive Clutch Control Module
Wiring / networkMedium
U0115
Lost Communication With ECM/PCM "B"
Wiring / networkHigh
U0121
Lost Communication With ABS Control Module
Wiring / networkHigh
U0122
Lost Communication With Vehicle Dynamics Control Module
Wiring / networkHigh
U0123
Lost Communication With Yaw Rate Sensor Module
Wiring / networkHigh
U0124
Lost Communication With Lateral Acceleration Sensor Module
Wiring / networkHigh
U0125
Lost Communication With Multi-Axis Acceleration Sensor Module
Wiring / networkHigh
U0126
Lost Communication With Steering Angle Sensor Module
Wiring / networkHigh
U0127
Lost Communication With Tire Pressure Monitor Module
Wiring / networkLow
U0128
Lost Communication With Park Brake Control Module
Wiring / networkHigh
U0129
Lost Communication With Brake System Control Module
Wiring / networkHigh
U0130
Lost Communication With Steering Effort Control Module
Wiring / networkHigh
U0131
Lost Communication With Power Steering Control Module
Wiring / networkHigh
U0132
Lost Communication With Ride Level Control Module
Wiring / networkMedium
U0140
Lost Communication With Body Control Module
Wiring / networkMedium
U0141
Lost Communication With Body Control Module "A"
Wiring / networkMedium
U0142
Lost Communication With Body Control Module "B"
Wiring / networkMedium
U0143
Lost Communication With Body Control Module "C"
Wiring / networkMedium
U0144
Lost Communication With Body Control Module "D"
Wiring / networkMedium
U0145
Lost Communication With Body Control Module "E"
Wiring / networkMedium
U0146
Lost Communication With Gateway "A"
Wiring / networkHigh
U0147
Lost Communication With Gateway "B"
Wiring / networkHigh
U0148
Lost Communication With Gateway "C"
Wiring / networkHigh
U0149
Lost Communication With Gateway "D"
Wiring / networkHigh
U0150
Lost Communication With Gateway "E"
Wiring / networkHigh
U0155
Lost Communication With Instrument Panel Cluster
Wiring / networkMedium
U0164
Lost Communication With HVAC Control Module
Wiring / networkLow
U0167
Lost Communication With Vehicle Immobiliser Control Module
Wiring / networkHigh
U0181
Lost Communication With Headlamp Levelling Control Module
Wiring / networkLow
U0182
Lost Communication With Lighting Control Module (Front)
Wiring / networkLow
U0183
Lost Communication With Lighting Control Module (Rear)
Wiring / networkLow
U0184
Lost Communication With Radio
Wiring / networkInfo
U0300
Internal Control Module Software Incompatibility
Wiring / networkMedium
U0301
Software Incompatibility With ECM/PCM
Wiring / networkMedium
U0302
Software Incompatibility With Transmission Control Module
Wiring / networkMedium
U0310
Software Incompatibility With Fuel Pump Control Module
Wiring / networkMedium
U0311
Software Incompatibility With Drive Motor Control Module
Wiring / networkMedium
U0312
Software Incompatibility With Battery Energy Control Module "A"
Wiring / networkMedium
U0313
Software Incompatibility With Battery Energy Control Module "B"
Wiring / networkMedium
U0315
Software Incompatibility With ABS Control Module
Wiring / networkHigh
U0317
Software Incompatibility With Park Brake Control Module
Wiring / networkHigh
U0318
Software Incompatibility With Brake System Control Module
Wiring / networkHigh
U0319
Software Incompatibility With Steering Effort Control Module
Wiring / networkHigh
U0320
Software Incompatibility With Power Steering Control Module
Wiring / networkHigh
U0323
Software Incompatibility With Instrument Panel Control Module
Wiring / networkMedium
U0326
Software Incompatibility With Vehicle Immobiliser Control Module
Wiring / networkMedium
U0327
Software Incompatibility With Vehicle Security Control Module
Wiring / networkMedium
U0328
Software Incompatibility With Steering Angle Sensor Module
Wiring / networkHigh
U0329
Software Incompatibility With Steering Column Control Module
Wiring / networkHigh
U0330
Software Incompatibility With Tire Pressure Monitor Module
Wiring / networkLow
U0401
Invalid Data Received From ECM/PCM "A"
Wiring / networkMedium
U0402
Invalid Data Received From Transmission Control Module
Wiring / networkMedium
U0403
Invalid Data Received From Transfer Case Control Module
Wiring / networkMedium
U0404
Invalid Data Received From Gear Shift Control Module
Wiring / networkMedium
U0410
Invalid Data Received From Fuel Pump Control Module
Wiring / networkMedium
U0411
Invalid Data Received From Drive Motor Control Module
Wiring / networkMedium
U0412
Invalid Data Received From Battery Energy Control Module "A"
Wiring / networkMedium
U0413
Invalid Data Received From Battery Energy Control Module "B"
Wiring / networkMedium
U0415
Invalid Data Received From ABS Control Module
Wiring / networkHigh
U0417
Invalid Data Received From Park Brake Control Module
Wiring / networkHigh
U0418
Invalid Data Received From Brake System Control Module
Wiring / networkHigh
U0419
Invalid Data Received From Steering Effort Control Module
Wiring / networkHigh
U0420
Invalid Data Received From Power Steering Control Module
Wiring / networkHigh
U0423
Invalid Data Received From Instrument Panel Control Module
Wiring / networkMedium
U0426
Invalid Data Received From Vehicle Immobiliser Control Module
Wiring / networkMedium
U0428
Invalid Data Received From Steering Angle Sensor Module
Wiring / networkHigh
U0429
Invalid Data Received From Steering Column Control Module
Wiring / networkHigh
U0430
Invalid Data Received From Tire Pressure Monitor Module
Wiring / networkLow