U02xx codes: Network codes U0200-U0299
174 network trouble codes from U0200 to U02C1. They mostly involve the vehicle bus wiring, CAN bus, lin bus and CAN bus wiring.
All U02xx codes
34 of these codes usually turn on the check engine light; 38 can often be fixed at home.
| Code | Meaning | Difficulty |
|---|---|---|
| U0200 | Lost Communication With Door Control Module B | Medium |
| U0201 | Lost Communication With Door Control Module C | Medium |
| U0202 | Lost Communication With Door Control Module D | Medium |
| U0203 | Lost Communication With Door Control Module E | Medium |
| U0204 | Lost Communication With Door Control Module F | Medium |
| U0205 | Lost Communication With Door Control Module G | Medium |
| U0206 | Lost Communication With Folding Top Control Module | Hard |
| U0207 | Lost Communication With Moveable Roof Control Module A | Medium |
| U0208 | Lost Communication With Seat Control Module A | Medium |
| U0209 | Lost Communication With Seat Control Module B | Easy |
| U020A | Lost Communication With Moveable Roof Control Module B | Medium |
| U020B | Lost Communication With Door Control Module H | Medium |
| U020C | Lost Communication With Wireless Accessory Charging Module A | Easy |
| U020D | Lost Communication With Wireless Accessory Charging Module B | Easy |
| U0210 | Lost Communication With Seat Control Module C | Medium |
| U0211 | Lost Communication With Seat Control Module D | Medium |
| U0212 | Lost Communication With Steering Column Control Module | Medium |
| U0213 | Lost Communication With Mirror Control Module A | Easy |
| U0214 | Lost Communication With Remote Function Actuation Module | Medium |
| U0215 | Lost Communication With Door Switch A | Medium |
| U0216 | Lost Communication With Door Switch B | Medium |
| U0217 | Lost Communication With Door Switch C | Medium |
| U0218 | Lost Communication With Door Switch D | Medium |
| U0219 | Lost Communication With Door Switch E | Medium |
| U0220 | Lost Communication With Door Switch F | Medium |
| U0221 | Lost Communication With Door Switch G | Medium |
| U0222 | Lost Communication With Door Window Motor A | Medium |
| U0223 | Lost Communication With Door Window Motor B | Medium |
| U0224 | Lost Communication With Door Window Motor C | Medium |
| U0225 | Lost Communication With Door Window Motor D | Medium |
| U0226 | Lost Communication With Door Window Motor E | Medium |
| U0227 | Lost Communication With Door Window Motor F | Medium |
| U0228 | Lost Communication With Door Window Motor G | Medium |
| U0229 | Lost Communication With Heated Steering Wheel Module | Medium |
| U022E | Lost Communication With Object Detection Maintenance Control Module A | Hard |
| U022F | Lost Communication With Object Detection Maintenance Control Module B | Hard |
| U0230 | Lost Communication With Rear Gate Module | Medium |
| U0231 | Lost Communication With Rain Sensing Module | Easy |
| U0232 | Lost Communication With Side Obstacle Detection Control Module A | Medium |
| U0233 | Lost Communication With Side Obstacle Detection Control Module B | Medium |
| U0234 | Lost Communication With Convenience Recall Module | Medium |
| U0235 | Lost Communication With Front Distance Range Sensor - Single Sensor or Center | Hard |
| U0236 | Lost Communication With Column Lock Module | Hard |
| U0237 | Lost Communication With Digital Audio Control Module C | Medium |
| U0238 | Lost Communication With Digital Audio Control Module D | Medium |
| U0239 | Lost Communication With Entrapment Control Module A | Medium |
| U023A | Lost Communication With Image Processing Module A | Hard |
| U023B | Lost Communication With Image Processing Module B | Hard |
| U023C | Lost Communication With Image Processing Module C | Hard |
| U023D | Lost Communication With Front Distance Range Sensor - Left | Hard |
| U023E | Lost Communication With Front Distance Range Sensor - Right | Hard |
| U0240 | Lost Communication With Entrapment Control Module B | Medium |
| U0241 | Lost Communication With Headlamp Control Module A | Medium |
| U0242 | Lost Communication With Headlamp Control Module B | Medium |
| U0243 | Lost Communication With Parking Assist Control Module B | Medium |
| U0244 | Lost Communication With Running Board Control Module A | Medium |
| U0245 | Lost Communication With Entertainment Control Module - Front | Medium |
| U0246 | Lost Communication With Seat Control Module E | Medium |
| U0247 | Lost Communication With Seat Control Module F | Medium |
| U0248 | Lost Communication With Remote Accessory Module | Medium |
| U0249 | Lost Communication With Entertainment Control Module - Rear B | Medium |
| U024A | Lost Communication With Interior Lighting Control Module A | Easy |
| U024B | Lost Communication With Seat Control Module G | Medium |
| U024C | Lost Communication With Seat Control Module H | Medium |
| U024D | Lost Communication With Seat Control Module J | Medium |
| U024E | Lost Communication With Side Obstacle Detection Control Module C | Medium |
| U024F | Lost Communication With Side Obstacle Detection Control Module D | Medium |
| U0250 | Lost Communication With Impact Classification System Module | Workshop only |
| U0251 | Lost Communication With Running Board Control Module B | Medium |
| U0252 | Lost Communication With Lighting Control Module - Rear B | Medium |
| U0253 | Lost Communication With Accessory Protocol Interface Module | Medium |
| U0254 | Lost Communication With Remote Start Module | Medium |
| U0255 | Lost Communication With Front Display Interface Module | Medium |
| U0256 | Lost Communication With Front Controls Interface Module A | Medium |
| U0257 | Lost Communication With Front Controls/Display Interface Module | Medium |
| U0258 | Lost Communication With Radio Transceiver | Medium |
| U0259 | Lost Communication With Special Purpose Vehicle Control Module A | Medium |
| U025A | Lost Communication With Special Purpose Vehicle Control Module B | Medium |
| U025B | Lost Communication With Special Purpose Vehicle Control Module C | Medium |
| U025C | Lost Communication With Special Purpose Vehicle Control Module D | Medium |
| U025D | Lost Communication With Front Controls Interface Module B | Medium |
| U025E | Lost Communication With Electronic Brake Booster Control Module A | Workshop only |
| U025F | Lost Communication With Electronic Brake Booster Control Module B | Workshop only |
| U0260 | Lost Communication With Seat Control Switch Module A | Easy |
| U0261 | Lost Communication With Seat Control Switch Module B | Easy |
| U0262 | Lost Communication With Audio Amplifier B | Medium |
| U0263 | Lost Communication With Speech Recognition Module | Medium |
| U0264 | Lost Communication With Camera Module - Rear | Medium |
| U0265 | Lost Communication With Image Processing Sensor A | Hard |
| U0266 | Lost Communication With Image Processing Sensor B | Medium |
| U0267 | Lost Communication With Image Processing Sensor C | Medium |
| U0268 | Lost Communication With Image Processing Sensor D | Medium |
| U0269 | Lost Communication With Image Processing Sensor E | Medium |
| U026A | Lost Communication With Image Processing Sensor F | Medium |
| U026B | Lost Communication With Image Processing Sensor G | Medium |
| U026C | Lost Communication With Image Processing Sensor H | Medium |
| U026D | Lost Communication With Image Processing Sensor I | Medium |
| U026E | Lost Communication With Image Processing Sensor J | Medium |
| U026F | Lost Communication With Image Processing Sensor K | Medium |
| U0270 | Lost Communication With Image Processing Sensor L | Medium |
| U0271 | Lost Communication With Seat Control Switch Module C | Easy |
| U0272 | Lost Communication With Seat Control Switch Module D | Easy |
| U0273 | Lost Communication With Lighting Driver Control Module A | Medium |
| U0274 | Lost Communication With Lighting Driver Control Module B | Medium |
| U0275 | Lost Communication With Lighting Driver Control Module C | Medium |
| U0276 | Lost Communication With Lighting Driver Control Module D | Medium |
| U0277 | Lost Communication With Seat Control Module K | Medium |
| U0278 | Lost Communication With Seat Control Module L | Medium |
| U0279 | Lost Communication With Haptic Control Module | Medium |
| U027A | Lost Communication With Battery Charger Control Module C | Hard |
| U027B | Lost Communication With Battery Charger Control Module D | Hard |
| U027C | Lost Communication With Off-Board Charger Control Module | Hard |
| U0284 | Lost Communication With Active Grille Air Shutter Module A | Medium |
| U0285 | Lost Communication With Active Grille Air Shutter Module B | Medium |
| U0286 | Lost Communication With Radiator Anti-Tamper Device | Medium |
| U0287 | Lost Communication With Transmission Fluid Pump Module A | Hard |
| U0288 | Lost Communication With DC/AC Converter Control Module A | Medium |
| U0289 | Lost Communication With DC/AC Converter Control Module B | Medium |
| U028A | Lost Communication With Transmission Fluid Pump Module B | Hard |
| U028B | Lost Communication With Active Grille Air Shutter Module C | Medium |
| U028C | Lost Communication With Active Grille Air Shutter Module D | Medium |
| U028D | Lost Communication With Active Aerodynamic Feature Control Module A | Medium |
| U028E | Lost Communication With Active Aerodynamic Feature Control Module B | Medium |
| U028F | Lost Communication With Active Aerodynamic Feature Control Module C | Medium |
| U0290 | Lost Communication With Active Aerodynamic Feature Control Module D | Hard |
| U0291 | Lost Communication With Gear Shift Control Module B | Medium |
| U0292 | Lost Communication With Drive Motor Control Module B | Hard |
| U0293 | Lost Communication With Hybrid/EV Powertrain Control Module | Hard |
| U0294 | Lost Communication With Powertrain Control Monitor Module | Hard |
| U0295 | Lost Communication With AC/AC Converter Control Module | Hard |
| U0296 | Lost Communication With AC/DC Converter Control Module A | Medium |
| U0297 | Lost Communication With AC/DC Converter Control Module B | Hard |
| U0298 | Lost Communication With DC/DC Converter Control Module A | Medium |
| U0299 | Lost Communication With DC/DC Converter Control Module B | Medium |
| U029A | Lost Communication With Hybrid/EV Battery Pack Sensor Module | Workshop only |
| U029B | Lost Communication With Drive Motor Control Module C | Workshop only |
| U029C | Lost Communication With Drive Motor Control Module D | Workshop only |
| U029D | Lost Communication With NOx Sensor A | Medium |
| U029E | Lost Communication With NOx Sensor B | Medium |
| U029F | Lost Communication With Evaporative Emission System Leak Detection Control Module | Medium |
| U02A0 | Invalid Data Received From Hybrid/EV Battery Interface Control Module D | Workshop only |
| U02A1 | Lost Communication With NOx Sensor C | Medium |
| U02A2 | Lost Communication With Reductant Quality Module | Medium |
| U02A3 | Lost Communication With Particulate Matter Sensor | Medium |
| U02A4 | Lost Communication With NH3 Sensor | Medium |
| U02A5 | Lost Communication With Reductant Heater Control Module | Medium |
| U02A6 | Lost Communication With Safety Integration Control Module | Workshop only |
| U02A7 | Lost Communication With Engine Sound Control 1 | Medium |
| U02A8 | Lost Communication With Engine Sound Control 2 | Medium |
| U02A9 | Lost Communication With Charge Air Cooler Coolant Pump A | Medium |
| U02AA | Lost Communication With Engine Disconnect Clutch | Workshop only |
| U02AB | Lost Communication With Vehicle Thermal Management Control Module | Workshop only |
| U02AC | Lost Communication With Turbocharger/Supercharger Boost Control A | Hard |
| U02AD | Lost Communication With Turbocharger/Supercharger Boost Control B | Hard |
| U02AE | Lost Communication With Hybrid/EV Battery Coolant Pump | Medium |
| U02AF | Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor | Hard |
| U02B0 | Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor | Hard |
| U02B1 | Lost Communication With Comfort and Convenience Display A | Medium |
| U02B2 | Lost Communication With Comfort and Convenience Display B | Medium |
| U02B3 | Lost Communication With Driver Monitoring System Module | Medium |
| U02B4 | Lost Communication With Front Radar Module A | Hard |
| U02B5 | Lost Communication With Front Radar Module B | Medium |
| U02B6 | Lost Communication With Rear Radar Module A | Hard |
| U02B7 | Lost Communication With Rear Radar Module B | Hard |
| U02B8 | Lost Communication With Rear Radar Module C | Hard |
| U02B9 | Lost Communication With Rear Radar Module D | Hard |
| U02BA | Lost Communication With Hybrid/EV Electronics Coolant Pump B | Hard |
| U02BB | Lost Communication With EVAP System Purge Pump | Medium |
| U02BC | Lost Communication With Localization and Mapping Module | Hard |
| U02BD | Lost Communication With Night Vision Control Module | Medium |
| U02BE | Lost Communication With Trailer Backup Assist Control Module | Medium |
| U02BF | Lost Communication With Interior Lighting Control Module B | Medium |
| U02C0 | Lost Communication With Active Radiator Air Flow Control Module A | Medium |
| U02C1 | Lost Communication With Hybrid/EV Electronics Coolant Pump C | Hard |