U CODE FAMILY
Network code references — Page 6.
Communication and network diagnostic references. A communication code does not identify a failed module by itself.
Generic OBD-II
U031C
Software Incompatibility With Brake System Control Module B
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Generic OBD-II
U031D
Software Incompatibility With Parking Assist Control Module A
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Generic OBD-II
U031E
Software Incompatibility With Parking Assist Control Module B
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Generic OBD-II
U031F
Software Incompatibility With Accessory Protocol Interface Module
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Generic OBD-II
U0320
Software Incompatibility With Power Steering Control Module
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Generic OBD-II
U0321
Software Incompatibility With Suspension Control Module A
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Generic OBD-II
U0322
Software Incompatibility With Body Control Module
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Generic OBD-II
U0323
Software Incompatibility With Instrument Panel Control Module
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Generic OBD-II
U0324
Software Incompatibility With HVAC Control Module
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Generic OBD-II
U0325
Software Incompatibility With Auxiliary Heater Control Module
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Generic OBD-II
U0326
Software Incompatibility With Vehicle Immobilizer Control Module
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Generic OBD-II
U0327
Software Incompatibility With Vehicle Security Control Module
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Generic OBD-II
U0328
Software Incompatibility With Steering Angle Sensor Module
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Generic OBD-II
U0329
Software Incompatibility With Steering Column Control Module
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Generic OBD-II
U032A
Software Incompatibility With A/C Compressor Control Module
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Generic OBD-II
U0330
Software Incompatibility With Tire Pressure Monitor Module
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Generic OBD-II
U0331
Software Incompatibility With Body Control Module A
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Generic OBD-II
U0332
Software Incompatibility With Multi-axis Acceleration Sensor Module A
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Generic OBD-II
U0333
Software Incompatibility With Gear Shift Control Module B
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Generic OBD-II
U0334
Software Incompatibility With Radio
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Generic OBD-II
U0335
Software Incompatibility With Hybrid/EV Battery Pack Sensor Module
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Generic OBD-II
U0336
Software Incompatibility With Restraints Control Module
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Generic OBD-II
U0337
Software Incompatibility With Battery Charger Control Module A
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Generic OBD-II
U0338
Software Incompatibility With Remote Function Actuation Module
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Generic OBD-II
U0339
Software Incompatibility With Body Control Module B
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Generic OBD-II
U033A
Software Incompatibility With Hybrid/EV Battery Interface Control Module A
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Generic OBD-II
U033B
Software Incompatibility With Hybrid/EV Battery Interface Control Module B
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Generic OBD-II
U033C
Software Incompatibility With Hybrid/EV Battery Interface Control Module C
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Generic OBD-II
U033D
Software Incompatibility With Hybrid/EV Battery Interface Control Module D
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Generic OBD-II
U033E
Software Incompatibility With Hybrid/EV Battery Interface Control Module E
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Generic OBD-II
U033F
Software Incompatibility With Hybrid/EV Battery Interface Control Module F
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Generic OBD-II
U0340
Software Incompatibility With Hybrid/EV Battery Interface Control Module G
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Generic OBD-II
U0341
Software Incompatibility With Hybrid/EV Battery Interface Control Module H
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Generic OBD-II
U0342
Software Incompatibility With Hybrid/EV Battery Interface Control Module I
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Generic OBD-II
U0343
Software Incompatibility With Hybrid/EV Battery Interface Control Module J
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Generic OBD-II
U0344
Software Incompatibility With Hybrid/EV Battery Interface Control Module K
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Generic OBD-II
U0345
Software Incompatibility With Hybrid/EV Battery Interface Control Module L
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Generic OBD-II
U0346
Software Incompatibility With Hybrid/EV Battery Interface Control Module M
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Generic OBD-II
U0347
Software Incompatibility With Hybrid/EV Battery Interface Control Module N
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Generic OBD-II
U0348
Software Incompatibility With Hybrid/EV Battery Interface Control Module O
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Generic OBD-II
U0349
Software Incompatibility With Hybrid/EV Battery Interface Control Module P
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Generic OBD-II
U034A
Software Incompatibility With Engine Disconnect Clutch
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Generic OBD-II
U034B
Software Incompatibility With Brake Booster Control
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Generic OBD-II
U034C
Software Incompatibility With Battery Energy Control Module C
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Generic OBD-II
U034D
Software Incompatibility With Vehicle Thermal Management Control Module
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Generic OBD-II
U034E
Software Incompatibility With Active Grille Air Shutter Module A
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Generic OBD-II
U034F
Software Incompatibility With Active Grille Air Shutter Module B
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Generic OBD-II
U0350
Software Incompatibility With Active Grille Air Shutter Module C
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Generic OBD-II
U0351
Software Incompatibility With Active Grille Air Shutter Module D
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Generic OBD-II
U0352
Software Incompatibility With NOx Sensor C
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Generic OBD-II
U0353
Software Incompatibility With Ion Sense Module
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Generic OBD-II
U0354
Software Incompatibility With Hybrid/EV Battery Inductive Charger Control Module
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Generic OBD-II
U0400
Invalid Data Received
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Generic OBD-II
U0401
Invalid Data Received From ECM/PCM A
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Generic OBD-II
U0402
Invalid Data Received From TCM
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Generic OBD-II
U0403
Invalid Data Received From Transfer Case Control Module
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Generic OBD-II
U0404
Invalid Data Received From Gear Shift Control Module A
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Generic OBD-II
U0405
Invalid Data Received From Cruise Control Module
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Generic OBD-II
U0406
Invalid Data Received From Fuel Injector Control Module
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Generic OBD-II
U0407
Invalid Data Received From Glow Plug Control Module 1
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Generic OBD-II
U0408
Invalid Data Received From Throttle Actuator A Control Module
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Generic OBD-II
U0409
Invalid Data Received From Alternative Fuel Control Module
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Generic OBD-II
U040A
Invalid Data Received From Air Conditioning Control Module
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Generic OBD-II
U040B
Invalid Data Received From Exhaust Gas Recirculation Control Module A
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Generic OBD-II
U040C
Invalid Data Received From Exhaust Gas Recirculation Control Module B
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Generic OBD-II
U040D
Invalid Data Received From Turbocharger/Supercharger Control Module A
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Generic OBD-II
U040E
Invalid Data Received From Turbocharger/Supercharger Control Module B
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Generic OBD-II
U040F
Invalid Data Received From Reductant Control Module
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Generic OBD-II
U0410
Invalid Data Received From Fuel Pump Control Module A
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Generic OBD-II
U0411
Invalid Data Received From Drive Motor Control Module A
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Generic OBD-II
U0412
Invalid Data Received From Battery Energy Control Module A
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Generic OBD-II
U0413
Invalid Data Received From Battery Energy Control Module B
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Generic OBD-II
U0414
Invalid Data Received From Four-Wheel Drive Clutch Control Module
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Generic OBD-II
U0415
Invalid Data Received From Anti-Lock Brake System (ABS) Control Module
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Generic OBD-II
U0416
Invalid Data Received From Vehicle Dynamics Control Module
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Generic OBD-II
U0417
Invalid Data Received From Park Brake Control Module
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Generic OBD-II
U0418
Invalid Data Received From Brake System Control Module A
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Generic OBD-II
U0419
Invalid Data Received From Steering Effort Control Module
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Generic OBD-II
U041A
Invalid Data Received From Battery Isolation/Voltage Stabilization Control Module
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Generic OBD-II
U041B
Invalid Data Received From Exhaust Gas Sensor Module A
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Generic OBD-II
U041C
Invalid Data Received From Rocker Arm Control Module A
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Generic OBD-II
U041D
Invalid Data Received From Rocker Arm Control Module B
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Generic OBD-II
U041E
Invalid Data Received From All Wheel Drive Control Module
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Generic OBD-II
U041F
Invalid Data Received From Throttle Actuator B Control Module
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Generic OBD-II
U0420
Invalid Data Received From Power Steering Control Module A
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Generic OBD-II
U0421
Invalid Data Received From Suspension Control Module A
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Generic OBD-II
U0422
Invalid Data Received From Body Control Module
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Generic OBD-II
U0423
Invalid Data Received From Instrument Panel Cluster Control Module
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Generic OBD-II
U0424
Invalid Data Received From HVAC Control Module
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Generic OBD-II
U0425
Invalid Data Received From Auxiliary Heater Control Module
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Generic OBD-II
U0426
Invalid Data Received From Vehicle Immobilizer Control Module
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Generic OBD-II
U0427
Invalid Data Received From Vehicle Security Control Module
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Generic OBD-II
U0428
Invalid Data Received From Steering Angle Sensor Module
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Generic OBD-II
U0429
Invalid Data Received From Steering Column Control Module
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Generic OBD-II
U042A
Invalid Data Received From V2X Module
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Generic OBD-II
U042B
Invalid Data Received From Chassis Control Module A
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Generic OBD-II
U042C
Invalid Data Received From Chassis Control Module B
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Generic OBD-II
U042D
Invalid Data Received from Active Vibration Control Module
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Generic OBD-II
U042E
Invalid Data Received From Generator A Control Module
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Generic OBD-II
U042F
Invalid Data Received From Camshaft Position Control Module
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.