Check-engine codes
What does my check-engine code mean?
Plain-English explanations for OBD-II trouble codes: what the code means, the most likely causes, symptoms, and how much labour a repair usually takes.
U0 codes · Network
- U008FVehicle Communication Bus G (-) Low
- U0090Vehicle Communication Bus G (-) High
- U0091CAN Communication Bus "C" Off
- U0092CAN Communication Bus "C" Performance
- U0093Vehicle Communication Bus H Performance
- U0094Vehicle Communication Bus H (+) Open
- U0095Vehicle Communication Bus H (+) Low
- U0096Vehicle Communication Bus H (+) High
- U0097Vehicle Communication Bus H (-) Open
- U0098Vehicle Communication Bus H (-) Low
- U0099Vehicle Communication Bus H (-) High
- U009AVehicle Communication Bus H (-) shorted to Bus H (+)
- U009BVehicle Communication Bus I
- U009CVehicle Communication Bus I Performance
- U009DVehicle Communication Bus J
- U009EVehicle Communication Bus J Performance
- U0100Lost Communication with ECM/PCM "A"
- U0101Lost Communication with TCM
- U0102Lost Communication with Transfer Case Control Module
- U0103Lost Communication with Gear Shift Module
- U0104Lost Communication with Cruise Control Module
- U0105Lost Communication with Fuel Injector Control Module
- U0106Lost Communication with Glow Plug Control Module
- U0107Lost Communication with Throttle Actuator Control Module
- U0108Lost Communication With Alternative Fuel Control Module
- U0109Lost Communication with Fuel Pump Control Module
- U010ALost Communication With Exhaust Gas Recirculation Control Module A
- U010BLost Communication With Exhaust Gas Recirculation Control Module B
- U010CLost Communication With Turbocharger/Supercharger Control Module A
- U010DLost Communication With Turbocharger/Supercharger Control Module B
- U010ELost Communication With Reductant Control Module
- U010FLost Communication With Air Conditioning Control Module
- U0110Lost Communication with Drive Motor Control Module
- U0111Lost Communication with Battery Energy Control Module
- U0112Lost Communication with Battery Energy Control Module "B"
- U0113Lost Communication with Battery Charger A Control Module
- U0114Lost Communication with 4WD Clutch Control Module
- U0115Lost Communication with ECM/PCM "B"
- U0116Lost Communication with Steering Effort Control Module
- U0117Lost Communication with Drive Motor Control Module 2
- U0118Lost Communication with Cabin Air Quality Sensor Module
- U0119Lost Communication with Steering Column Control Module
- U011ALost Communication With Exhaust Gas Sensor Module A
- U011BLost Communication With Rocker Arm Control Module A
- U011CLost Communication With Rocker Arm Control Module B
- U011DLost Communication With All Wheel Drive Control Module
- U011ELost Communication With Throttle Actuator B Control Module
- U011FLost Communication With V2X Module
- U0120Lost Communication with Starter/Generator Control Module
- U0121Lost Communication with ABS Control Module
- U0122Lost Communication with Vehicle Dynamics Control Module
- U0123Lost Communication with Yaw Rate Sensor Module
- U0124Lost Communication with Lateral Acceleration Sensor Module
- U0125Lost Communication with Multi-axis Acceleration Sensor
- U0126Lost Communication with Steering Angle Sensor Module
- U0127Lost Communication with Tire Pressure Monitor Module
- U0128Lost Communication with Park Brake Control Module
- U0129Lost Communication with Brake System Control Module
- U012ALost Communication With Chassis Control Module A
- U012BLost Communication With Chassis Control Module B
- U012CLost Communication With Active Vibration Control Module
- U012DLost Communication With Generator A Control Module
- U012ELost Communication With Camshaft Position Control Module
- U012FLost Communication With Generator B Control Module
- U0130Lost Communication with Steering Effort Control Module B
- U0131Lost Communication with Power Steering Control Module
- U0132Lost Communication with Ride Level Control Module
- U0133Lost Communication with Yaw Rate Sensor Module
- U0134Lost Communication with Restraints System Sensor (Side Sensor)
- U0135Lost Communication with Parking Brake Control Module
- U0136Lost Communication with Park Brake Module B
- U0137Lost Communication with Trailer Brake Control Module
- U0138Lost Communication with All Terrain Control Module
- U0139Lost Communication with Active Roll Control Module
- U013CLost Communication With Accelerator Pedal Module
- U013DLost Communication With Vacuum Sensor A
- U013ELost Communication With Vacuum Sensor B
- U013FLost Communication With Pedestrian Alert Control Module
- U0140Lost Communication with Body Control Module
- U0141Lost Communication with Body Control Module A
- U0142Lost Communication with Body Control Module B
- U0143Lost Communication with Body Control Module C
- U0144Lost Communication with Personalization Module "B"
- U0145Lost Communication with Restraints Control Module Auxiliary
- U0146Lost Communication with Gateway "A"
- U0147Lost Communication with Gateway "B"
- U0148Lost Communication with Body Control Module "C"
- U0149Lost Communication with Door Driver Module
- U014ALost Communication With Battery Energy Control Module C
- U014BLost Communication With Hybrid/EV Battery Inductive Charging Module
- U014CLost Communication With Battery Energy Control Module D
- U014DLost Communication with Mirror Control Module B
- U014ELost Communication With Multi-axis Acceleration Sensor Module B
- U0150Lost Communication with Side Object Detection Control Module Left
- U0151Lost Communication with Restraints Control Module
- U0152Lost Communication with Side Restraints Control Module Left
- U0153Lost Communication with Restraints Control Module B
- U0154Lost Communication with Restraints Occupant Sensing Module
- U0155Lost Communication with Instrument Panel Cluster
- U0156Lost Communication with Information Center "A"
Code data: OBDex open dataset (CC0), reviewed and rewritten for drivers. Always confirm a diagnosis before replacing parts.