U04xx OBD-II Codes (U0400–U0499)

100 fault codes in the U04xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

U0400 moderate
Invalid Data Received From ECM/PCM
U0401 moderate
Invalid Data Received From ECM/PCM
U0402 moderate
Invalid Data Received From Transmission Control Module
U0403 moderate
Invalid Data Received From Transfer Case Control Module
U0404 low
Invalid Data Received From HVAC Control Module
U0405 moderate
Invalid Data Received From Cruise Control Module
U0406 moderate
Invalid Data Received From Body Control Module
U0407 low
Invalid Data Received From Instrument Panel Module
U0408 critical
Invalid Data Received From Steering Effort Control Module
U0409 moderate
Invalid Data Received From Park Brake Control Module
U0410 critical
Invalid Data Received From Fuel Pump Control Module
U0411 critical
Invalid Data Received From ECM/PCM
U0412 moderate
Invalid Data Received From TCM
U0413 moderate
Invalid Data Received From Transfer Case Control Module
U0414 moderate
Invalid Data Received From Four-Wheel Drive Clutch Control Module
U0415 critical
Invalid Data Received From ABS Control Module
U0416 moderate
Invalid Data Received From Vehicle Dynamics Control Module
U0417 low
Invalid Data Received From Cruise Control Module
U0418 moderate
Invalid Data Received From Adaptive Cruise Control Module
U0419 moderate
Invalid Data Received From Body Control Module A
U0420 moderate
Invalid Data Received From Body Control Module B
U0421 moderate
Invalid Data Received From Instrument Panel Module
U0422 moderate
Invalid Data Received From Instrument Panel Module B
U0423 critical
Invalid Data Received From Restraint Control Module
U0424 low
Invalid Data Received From Climate Control Module
U0425 low
Invalid Data Received From Seat Control Module
U0426 low
Invalid Data Received From Body Control Module
U0427 low
Invalid Data Received From Auxiliary Heater Module
U0428 moderate
Invalid Data Received From Steering Effort Control Module
U0429 moderate
Invalid Data Received From Park Brake Control Module
U0430 moderate
Invalid Data Received From Ride Level Control Module
U0431 low
Invalid Data Received From Headlamp Leveling Module
U0432 low
Invalid Data Received From Adaptive Headlamp Module
U0433 low
Invalid Data Received From Door Control Module A
U0434 low
Invalid Data Received From Door Control Module B
U0435 moderate
Invalid Data Received From Trailer Brake Module
U0436 low
Invalid Data Received From Ambient Air Temperature Sensor Module
U0437 low
Invalid Data Received From Fuel Level Sensor Module
U0438 low
Invalid Data Received From HVAC Control Module
U0439 critical
Invalid Data Received From Immobilizer Module
U0440 low
Invalid Data Received From GPS Navigation Module
U0441 low
Invalid Data Received From Telematic Control Module
U0442 low
Invalid Data Received From Infotainment Module
U0443 low
Invalid Data Received From Audio Amplifier Module
U0444 low
Invalid Data Received From Hands-Free Communication Module
U0445 low
Invalid Data Received From Door Lock Module
U0446 low
Invalid Data Received From Power Window Module
U0447 low
Invalid Data Received From Mirror Control Module
U0448 low
Invalid Data Received From Sunroof Control Module
U0449 low
Invalid Data Received From Wiper Control Module
U0450 moderate
Invalid Data Received From Rear Axle Steering Module
U0451 low
Invalid Data Received From HVAC Control Module A
U0452 low
Invalid Data Received From HVAC Control Module B
U0453 low
Invalid Data Received From Seat Control Module A
U0454 low
Invalid Data Received From Seat Control Module B
U0455 low
Invalid Data Received From Auxiliary Climate Module
U0456 moderate
Invalid Data Received From Steering Column Control Module
U0457 moderate
Invalid Data Received From Electric Park Brake Module A
U0458 moderate
Invalid Data Received From Electric Park Brake Module B
U0459 low
Invalid Data Received From Tire Pressure Monitor Module
U0460 moderate
Invalid Data Received From Pedestrian Protection Module
U0461 low
Invalid Data Received From Lane Departure Warning Module
U0462 critical
Invalid Data Received From Emergency Braking Module
U0463 moderate
Invalid Data Received From Rollover Sensor Module
U0464 moderate
Invalid Data Received From Fuel Injection Module
U0465 moderate
Invalid Data Received From Ignition Control Module
U0466 critical
Invalid Data Received From Throttle Actuator Module
U0467 moderate
Invalid Data Received From Charging System Module
U0468 low
Invalid Data Received From Start/Stop System Module
U0469 moderate
Invalid Data Received From Transmission Oil Temperature Module
U0470 moderate
Invalid Data Received From Turbocharger Boost Control Module
U0471 moderate
Invalid Data Received From Supercharger Module
U0472 moderate
Invalid Data Received From Variable Valve Timing Module
U0473 moderate
Invalid Data Received From EGR Control Module
U0474 moderate
Invalid Data Received From Diesel Particulate Filter Module
U0475 moderate
Invalid Data Received From Battery Energy Control Module
U0476 moderate
Invalid Data Received From Exhaust Pressure Module
U0477 moderate
Invalid Data Received From Coolant Pump Module
U0478 low
Invalid Data Received From Oil Condition Module
U0479 moderate
Invalid Data Received From Air Suspension Compressor Module
U0480 moderate
Invalid Data Received From Electric Fan Module
U0481 moderate
Invalid Data Received From Fuel Pump Control Module
U0482 low
Invalid Data Received From Secondary Air Injection Module
U0483 low
Invalid Data Received From Catalyst Temperature Module
U0484 low
Invalid Data Received From Variable Displacement Module
U0485 low
Invalid Data Received From Heated Steering Wheel Module
U0486 low
Invalid Data Received From Rear Camera Module
U0487 low
Invalid Data Received From Keyless Entry Module
U0488 low
Invalid Data Received From Power Tailgate Module
U0489 low
Invalid Data Received From Power Folding Mirror Module
U0490 low
Invalid Data Received From Rain/Light Sensor Module
U0491 low
Invalid Data Received From Compass Module
U0492 moderate
Invalid Data Received From Automatic Transmission Fluid Module
U0493 low
Invalid Data Received From Battery Saver Module
U0494 low
Invalid Data Received From Heated Mirror Module
U0495 low
Invalid Data Received From Horn Control Module
U0496 low
Invalid Data Received From Exterior Lamp Module
U0497 low
Invalid Data Received From Interior Lamp Module
U0498 moderate
Invalid Data Received From Anti-Theft Module
U0499 moderate
Invalid Data Received From Vehicle Security Module
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