U04xx codes: Network codes U0400-U0499
181 network trouble codes from U0400 to U04C0. They mostly involve the CAN bus wiring, engine control module, hybrid control module and vehicle gateway.
All U04xx codes
67 of these codes usually turn on the check engine light; 5 can often be fixed at home.
| Code | Meaning | Difficulty |
|---|---|---|
| U0400 | Invalid Data Received | Workshop only |
| U0401 | Invalid Data Received From ECM/PCM A | Hard |
| U0402 | Invalid Data Received From TCM | Hard |
| U0403 | Invalid Data Received From Transfer Case Control Module | Medium |
| U0404 | Invalid Data Received From Gear Shift Control Module A | Hard |
| U0405 | Invalid Data Received From Cruise Control Module | Medium |
| U0406 | Invalid Data Received From Fuel Injector Control Module | Hard |
| U0407 | Invalid Data Received From Glow Plug Control Module | Medium |
| U0408 | Invalid Data Received From Throttle Actuator Control Module | Medium |
| U0409 | Invalid Data Received From Alternative Fuel Control Module | Workshop only |
| U040A | Invalid Data Received From Air Conditioning Control Module | Medium |
| U040B | Invalid Data Received From Exhaust Gas Recirculation Control Module A | Hard |
| U040C | Invalid Data Received From Exhaust Gas Recirculation Control Module B | Hard |
| U040D | Invalid Data Received From Turbocharger/Supercharger Control Module A | Hard |
| U040E | Invalid Data Received From Turbocharger/Supercharger Control Module B | Hard |
| U040F | Invalid Data Received From Reductant Control Module | Hard |
| U0410 | Invalid Data Received From Fuel Pump Control Module | Medium |
| U0411 | Invalid Data Received From Drive Motor Control Module | Workshop only |
| U0412 | Invalid Data Received From Battery Energy Control Module A | Workshop only |
| U0413 | Invalid Data Received From Battery Energy Control Module B | Workshop only |
| U0414 | Invalid Data Received From Four-Wheel Drive Clutch Control Module | Hard |
| U0415 | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module | Hard |
| U0416 | Invalid Data Received From Vehicle Dynamics Control Module | Medium |
| U0417 | Invalid Data Received From Park Brake Control Module | Medium |
| U0418 | Invalid Data Received From Brake System Control Module A | Hard |
| U0419 | Invalid Data Received From Steering Effort Control Module | Workshop only |
| U041A | Invalid Data Received From Battery Isolation/Voltage Stabilization Control Module | Medium |
| U041B | Invalid Data Received From Exhaust Gas Sensor Module A | Hard |
| U041C | Invalid Data Received From Rocker Arm Control Module A | Hard |
| U041D | Invalid Data Received From Rocker Arm Control Module B | Hard |
| U041E | Invalid Data Received From All Wheel Drive Control Module | Medium |
| U041F | Invalid Data Received From Throttle Actuator B Control Module | Hard |
| U0420 | Invalid Data Received From Power Steering Control Module A | Workshop only |
| U0421 | Invalid Data Received From Suspension Control Module A | Workshop only |
| U0422 | Invalid Data Received From Body Control Module | Workshop only |
| U0423 | Invalid Data Received From Instrument Panel Cluster Control Module | Workshop only |
| U0424 | Invalid Data Received From HVAC Control Module | Workshop only |
| U0425 | Invalid Data Received From Auxiliary Heater Control Module | Workshop only |
| U0426 | Invalid Data Received From Vehicle Immobilizer Control Module | Workshop only |
| U0427 | Invalid Data Received From Vehicle Security Control Module | Workshop only |
| U0428 | Invalid Data Received From Steering Angle Sensor Module | Workshop only |
| U0429 | Invalid Data Received From Steering Column Control Module | Workshop only |
| U042A | Invalid Data Received From V2X Module | Workshop only |
| U042B | Invalid Data Received From Chassis Control Module A | Workshop only |
| U042C | Invalid Data Received From Chassis Control Module B | Workshop only |
| U042D | Invalid Data Received From Active Vibration Control Module | Workshop only |
| U042E | Invalid Data Received From Generator A Control Module | Medium |
| U042F | Invalid Data Received From Camshaft Position Control Module | Workshop only |
| U0430 | Invalid Data Received From Tire Pressure Monitor Module | Medium |
| U0431 | Invalid Data Received From Body Control Module A | Workshop only |
| U0432 | Invalid Data Received From Multi-axis Acceleration Sensor Module A | Workshop only |
| U0433 | Invalid Data Received From Front Distance Range Sensor - Single Sensor or Center | Workshop only |
| U0434 | Invalid Data Received From Active Roll Control Module | Workshop only |
| U0435 | Invalid Data Received From Power Steering Control Module - Rear | Workshop only |
| U0436 | Invalid Data Received From Differential Control Module - Front | Workshop only |
| U0437 | Invalid Data Received From Differential Control Module - Rear | Workshop only |
| U0438 | Invalid Data Received From Trailer Brake Control Module | Medium |
| U0439 | Invalid Data Received From All Terrain Control Module | Medium |
| U043A | Invalid Data Received From Suspension Control Module B | Workshop only |
| U043B | Invalid Data Received From Front Distance Range Sensor - Left | Workshop only |
| U043C | Invalid Data Received From Front Distance Range Sensor - Right | Workshop only |
| U043D | Invalid Data Received From Accelerator Pedal Module | Medium |
| U043E | Invalid Data Received From Vacuum Sensor A | Medium |
| U043F | Invalid Data Received From Vacuum Sensor B | Medium |
| U0440 | Invalid Data Received From Pedestrian Alert Control Module | Medium |
| U0441 | Invalid Data Received From Emissions Critical Control Information | Workshop only |
| U0442 | Invalid Data Received From ECM/PCM B | Workshop only |
| U0443 | Invalid Data Received From Body Control Module B | Medium |
| U0444 | Invalid Data Received From Body Control Module C | Workshop only |
| U0445 | Invalid Data Received From Body Control Module D | Workshop only |
| U0446 | Invalid Data Received From Body Control Module E | Workshop only |
| U0447 | Invalid Data Received From Serial Data Gateway Module A | Workshop only |
| U0448 | Invalid Data Received From Serial Data Gateway Module B | Workshop only |
| U0449 | Invalid Data Received From Serial Data Gateway Module C | Workshop only |
| U044A | Invalid Data Received From Serial Data Gateway Module D | Workshop only |
| U044B | Invalid Data Received From Battery Energy Control Module C | Workshop only |
| U044C | Invalid Data Received From Hybrid/EV Battery Inductive Charging Module | Workshop only |
| U044D | Invalid Data Received From Generator B Control Module | Medium |
| U044F | Invalid Data Received From Mirror Control Module B | Medium |
| U0451 | Invalid Data Received From Serial Data Gateway Module E | Workshop only |
| U0452 | Invalid Data Received From Restraints Control Module | Workshop only |
| U0453 | Invalid Data Received From Side Restraints Control Module - Left | Workshop only |
| U0454 | Invalid Data Received From Side Restraints Control Module - Right | Workshop only |
| U0455 | Invalid Data Received From Restraints Occupant Classification System Module | Workshop only |
| U0456 | Invalid Data Received From Coolant Temperature Control Module | Medium |
| U0457 | Invalid Data Received From Information Center A | Medium |
| U0458 | Invalid Data Received From Information Center B | Medium |
| U0459 | Invalid Data Received From Head Up Display | Medium |
| U045A | Invalid Data Received From Parking Assist Control Module A | Medium |
| U045B | Invalid Data Received From Anti-Lock Brake System (ABS) Control Module B | Workshop only |
| U045C | Invalid Data Received From Power Steering Control Module B | Workshop only |
| U045D | Invalid Data Received From Automated Driving System Control Module A | Workshop only |
| U045E | Invalid Data Received From Automated Driving System Control Module B | Workshop only |
| U045F | Invalid Data Received From Automated Driving System Interface Module A | Workshop only |
| U0460 | Invalid Data Received From Automated Driving System Interface Module B | Workshop only |
| U0461 | Invalid Data Received From Audible Alert Control Module | Medium |
| U0462 | Invalid Data Received From Compass Module | Easy |
| U0463 | Invalid Data Received From Navigation Display Module | Medium |
| U0464 | Invalid Data Received From Navigation Control Module | Medium |
| U0465 | Invalid Data Received From PTO Control Module | Hard |
| U0466 | Invalid Data Received From HVAC Control Module - Rear | Medium |
| U0467 | Invalid Data Received From Fuel Additive Control Module | Hard |
| U0468 | Invalid Data Received From Fuel Cell Control Module | Workshop only |
| U0469 | Invalid Data Received From Starter / Generator Control Module | Hard |
| U046A | Invalid Data Received From Sunroof Control Module | Medium |
| U046B | Invalid Data Received From Global Positioning System Module | Medium |
| U046C | Invalid Data Received From A/C Compressor Control Module | Workshop only |
| U046D | Invalid Data Received From Fuel Pump Control Module B | Medium |
| U046E | Invalid Data Received From Exhaust Gas Sensor Module B | Medium |
| U0471 | Invalid Data Received From Restraints System Sensor A | Hard |
| U0472 | Invalid Data Received From Restraints System Sensor B | Hard |
| U0473 | Invalid Data Received From Restraints System Sensor C | Hard |
| U0474 | Invalid Data Received From Restraints System Sensor D | Hard |
| U0475 | Invalid Data Received From Restraints System Sensor E | Hard |
| U0476 | Invalid Data Received From Restraints System Sensor F | Hard |
| U0477 | Invalid Data Received From Restraints System Sensor G | Hard |
| U0478 | Invalid Data Received From Restraints System Sensor H | Hard |
| U0479 | Invalid Data Received From Restraints System Sensor I | Hard |
| U047A | Invalid Data Received From Restraints System Sensor J | Hard |
| U047B | Invalid Data Received From Restraints System Sensor K | Hard |
| U047C | Invalid Data Received From Restraints System Sensor L | Hard |
| U047D | Invalid Data Received From Restraints System Sensor M | Hard |
| U047E | Invalid Data Received From Restraints System Sensor N | Hard |
| U047F | Invalid Data Received From Seat Belt Pretensioner Module A | Hard |
| U0480 | Invalid Data Received From Seat Belt Pretensioner Module B | Hard |
| U0481 | Invalid Data Received From Automatic Lighting Control Module | Medium |
| U0482 | Invalid Data Received From Headlamp Leveling Control Module A | Medium |
| U0483 | Invalid Data Received From Lighting Control Module - Front | Medium |
| U0484 | Invalid Data Received From Lighting Control Module - Rear A | Medium |
| U0485 | Invalid Data Received From Radio | Medium |
| U0486 | Invalid Data Received From Antenna Control Module | Medium |
| U0487 | Invalid Data Received From Audio Amplifier A | Medium |
| U0488 | Invalid Data Received From Digital Disc Player/Changer Module A | Medium |
| U0489 | Invalid Data Received From Digital Disc Player/Changer Module B | Medium |
| U048A | Invalid Data Received From Digital Disc Player/Changer Module C | Medium |
| U048B | Invalid Data Received From Headlamp Leveling Control Module B | Medium |
| U0491 | Invalid Data Received From Digital Disc Player/Changer Module D | Medium |
| U0492 | Invalid Data Received From Television | Medium |
| U0493 | Invalid Data Received From Personal Computer | Medium |
| U0494 | Invalid Data Received From Digital Audio Control Module A | Medium |
| U0495 | Invalid Data Received From Digital Audio Control Module B | Medium |
| U0496 | Invalid Data Received From Subscription Entertainment Receiver Module | Easy |
| U0497 | Invalid Data Received From Entertainment Control Module - Rear A | Medium |
| U0498 | Invalid Data Received From Telephone Control Module | Medium |
| U0499 | Invalid Data Received From Telematic Control Module | Medium |
| U049A | Invalid Data Received From Door Control Module A | Medium |
| U049B | Invalid Data Received From Tachograph Module | Workshop only |
| U049C | Invalid Data Received From Battery Charger Control Module A | Workshop only |
| U049D | Invalid Data Received From Glow Plug Control Module 2 | Medium |
| U049E | Invalid Data Received From Direct Ozone Reduction Catalyst Temperature Sensor | Medium |
| U049F | Invalid Data Received From Transmission Range Control Module | Workshop only |
| U04A0 | Invalid Data Received From Engine Coolant Pump Control Module | Medium |
| U04A1 | Invalid Data Received From Hybrid/EV Battery Interface Control Module A | Workshop only |
| U04A2 | Invalid Data Received From Hybrid/EV Battery Interface Control Module B | Workshop only |
| U04A3 | Invalid Data Received From Hybrid/EV Battery Interface Control Module C | Workshop only |
| U04A4 | Invalid Data Received From Particulate Matter Sensor A | Medium |
| U04A5 | Invalid Data Received From Hybrid/EV Battery Interface Control Module E | Workshop only |
| U04A6 | Invalid Data Received From Hybrid/EV Battery Interface Control Module F | Workshop only |
| U04A7 | Invalid Data Received From Hybrid/EV Battery Interface Control Module G | Workshop only |
| U04A8 | Invalid Data Received From Hybrid/EV Battery Interface Control Module H | Workshop only |
| U04A9 | Invalid Data Received From Hybrid/EV Battery Interface Control Module I | Workshop only |
| U04AA | Invalid Data Received From Hybrid/EV Battery Interface Control Module J | Workshop only |
| U04AB | Invalid Data Received From Hybrid/EV Battery Interface Control Module K | Workshop only |
| U04AC | Invalid Data Received From Hybrid/EV Battery Interface Control Module L | Workshop only |
| U04AD | Invalid Data Received From Hybrid/EV Battery Interface Control Module M | Workshop only |
| U04AE | Invalid Data Received From Hybrid/EV Battery Interface Control Module N | Workshop only |
| U04AF | Invalid Data Received From Hybrid/EV Battery Interface Control Module O | Workshop only |
| U04B0 | Invalid Data Received From Hybrid/EV Battery Interface Control Module P | Workshop only |
| U04B1 | Invalid Data Received From Battery Monitor Module | Medium |
| U04B2 | Invalid Data Received From Particulate Matter Sensor B | Medium |
| U04B3 | Invalid Data Received From Planetary Gear Set Control Module | Workshop only |
| U04B4 | Invalid Data Received From Brake Blending Actuator | Workshop only |
| U04B5 | Invalid Data Received From Brake System Control Module B | Workshop only |
| U04B6 | Invalid Data Received From Catalyst Heater Control Module | Workshop only |
| U04BA | Invalid Data Received From Switch Input Module A | Medium |
| U04BB | Invalid Data Received From Switch Input Module B | Medium |
| U04BC | Invalid Data Received From Switch Input Module C | Medium |
| U04BD | Invalid Data Received From Park Lock/Pawl Control Module | Workshop only |
| U04BE | Invalid Data Received From Battery Charger Control Module B | Workshop only |
| U04BF | Invalid Data Received From Drive Motor A Clutch Actuator | Workshop only |
| U04C0 | Invalid Data Received From Battery Management Control Module | Medium |