Fault codes U02xx: lost communication with a control unit (2)
Communication codes between control units. The cause is often a connector, a wire, a power supply or a weak battery: the control unit named is not necessarily faulty.
Official codes: 174, from smallest to largest. Tap a code to get a direct link to share.
| Code | Meaning |
|---|---|
| U0200 | Lost Communication With Door Control Module B |
| U0201 | Lost Communication With Door Control Module C |
| U0202 | Lost Communication With Door Control Module D |
| U0203 | Lost Communication With Door Control Module E |
| U0204 | Lost Communication With Door Control Module F |
| U0205 | Lost Communication With Door Control Module G |
| U0206 | Lost Communication With Folding Top Control Module |
| U0207 | Lost Communication With Moveable Roof Control Module A |
| U0208 | Lost Communication With Seat Control Module A |
| U0209 | Lost Communication With Seat Control Module B |
| U020A | Lost Communication With Moveable Roof Control Module B |
| U020B | Lost Communication With Door Control Module H |
| U020C | Lost Communication With Wireless Accessory Charging Module A |
| U020D | Lost Communication With Wireless Accessory Charging Module B |
| U0210 | Lost Communication With Seat Control Module C |
| U0211 | Lost Communication With Seat Control Module D |
| U0212 | Lost Communication with Steering Column Control Module |
| U0213 | Lost Communication with Mirror Control Module |
| U0214 | Lost Communication with Remote Function Actuation |
| U0215 | Lost Communication with Door Control Module Front Driver |
| U0216 | Lost Communication with Door Control Module Front Passenger |
| U0217 | Lost Communication with Door Control Module Rear Driver |
| U0218 | Lost Communication with Door Control Module Rear Passenger |
| U0219 | Lost Communication with Liftgate/Decklid Control Module |
| U0220 | Lost Communication with Door Control Module D |
| U0221 | Lost Communication with Door Control Module E |
| U0222 | Lost Communication with Door Control Module F |
| U0223 | Lost Communication With Door Window Motor B |
| U0224 | Lost Communication With Door Window Motor C |
| U0225 | Lost Communication With Door Window Motor D |
| U0226 | Lost Communication With Door Window Motor E |
| U0227 | Lost Communication With Door Window Motor F |
| U0228 | Lost Communication With Door Window Motor G |
| U0229 | Lost Communication With Heated Steering Wheel Module |
| U022E | Lost Communication With Object Detection Maintenance Control Module A |
| U022F | Lost Communication With Object Detection Maintenance Control Module B |
| U0230 | Lost Communication With Rear Gate Module |
| U0231 | Lost Communication with Rain Sensor Module |
| U0232 | Lost Communication with Left Side Obstacle Detection Control Module |
| U0233 | Lost Communication with Right Side Obstacle Detection Control Module |
| U0234 | Lost Communication With Convenience Recall Module |
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| U0236 | Lost Communication with Steering Angle Sensor Module |
| U0237 | Lost Communication with Sunroof Assembly Control Module |
| U0238 | Lost Communication With Digital Audio Control Module D |
| U0239 | Lost Communication With Entrapment Control Module A |
| U023A | Lost Communication With Image Processing Module A |
| U023B | Lost Communication With Image Processing Module B |
| U023C | Lost Communication With Image Processing Module C |
| U023D | Lost Communication With Front Distance Range Sensor - Left |
| U023E | Lost Communication With Front Distance Range Sensor - Right |
| U0240 | Lost Communication With Entrapment Control Module B |
| U0241 | Lost Communication With Headlamp Control Module A |
| U0242 | Lost Communication With Headlamp Control Module B |
| U0243 | Lost Communication With Parking Assist Control Module B |
| U0244 | Lost Communication With Running Board Control Module A |
| U0245 | Lost Communication With Entertainment Control Module - Front |
| U0246 | Lost Communication With Seat Control Module E |
| U0247 | Lost Communication With Seat Control Module F |
| U0248 | Lost Communication With Remote Accessory Module |
| U0249 | Lost Communication With Entertainment Control Module - Rear B |
| U024A | Lost Communication With Interior Lighting Control Module A |
| U024B | Lost Communication With Seat Control Module G |
| U024C | Lost Communication With Seat Control Module H |
| U024D | Lost Communication With Seat Control Module J |
| U024E | Lost Communication With Side Obstacle Detection Control Module C |
| U024F | Lost Communication With Side Obstacle Detection Control Module D |
| U0250 | Lost Communication With Impact Classification System Module |
| U0251 | Lost Communication With Running Board Control Module B |
| U0252 | Lost Communication With Lighting Control Module Rear B |
| U0253 | Lost Communication With Accessory Protocol Interface Module |
| U0254 | Lost Communication With Remote Start Module |
| U0255 | Lost Communication With Front Display Interface Module |
| U0256 | Lost Communication With Front Controls Interface Module A |
| U0257 | Lost Communication With Front Controls/Display Interface Module |
| U0258 | Lost Communication With Radio Transceiver |
| U0259 | Lost Communication With Special Purpose Vehicle Control Module A |
| U025A | Lost Communication With Special Purpose Vehicle Control Module B |
| U025B | Lost Communication With Special Purpose Vehicle Control Module C |
| U025C | Lost Communication With Special Purpose Vehicle Control Module D |
| U025D | Lost Communication With Front Controls Interface Module B |
| U025E | Lost Communication With Electronic Brake Booster Control Module A |
| U025F | Lost Communication With Electronic Brake Booster Control Module B |
| U0260 | Lost Communication With Seat Control Switch Module A |
| U0261 | Lost Communication With Seat Control Switch Module B |
| U0262 | Lost Communication With Audio Amplifier B |
| U0263 | Lost Communication With Speech Recognition Module |
| U0264 | Lost Communication With Camera Module Rear |
| U0265 | Lost Communication With Image Processing Sensor A |
| U0266 | Lost Communication With Image Processing Sensor B |
| U0267 | Lost Communication With Image Processing Sensor C |
| U0268 | Lost Communication With Image Processing Sensor D |
| U0269 | Lost Communication With Image Processing Sensor E |
| U026A | Lost Communication With Image Processing Sensor F |
| U026B | Lost Communication With Image Processing Sensor G |
| U026C | Lost Communication With Image Processing Sensor H |
| U026D | Lost Communication With Image Processing Sensor I |
| U026E | Lost Communication With Image Processing Sensor J |
| U026F | Lost Communication With Image Processing Sensor K |
| U0270 | Lost Communication With Image Processing Sensor L |
| U0271 | Lost Communication With Seat Control Switch Module C |
| U0272 | Lost Communication With Seat Control Switch Module D |
| U0273 | Lost Communication With Lighting Driver Control Module A |
| U0274 | Lost Communication With Lighting Driver Control Module B |
| U0275 | Lost Communication With Lighting Driver Control Module C |
| U0276 | Lost Communication With Lighting Driver Control Module D |
| U0277 | Lost Communication With Seat Control Module K |
| U0278 | Lost Communication With Seat Control Module L |
| U0279 | Lost Communication With Haptic Control Module |
| U027A | Lost Communication With Battery Charger Control Module C |
| U027B | Lost Communication With Battery Charger Control Module D |
| U027C | Lost Communication With Off-Board Charger Control Module |
| U0284 | Lost Communication With Active Grille Air Shutter Module A |
| U0285 | Lost Communication With Active Grille Air Shutter Module B |
| U0286 | Lost Communication With Radiator Anti-Tamper Device |
| U0287 | Lost Communication With Transmission Fluid Pump Module A |
| U0288 | Lost Communication With DC/AC Converter Control Module A |
| U0289 | Lost Communication With DC/AC Converter Control Module B |
| U028A | Lost Communication With Transmission Fluid Pump Module B |
| U028B | Lost Communication With Active Grille Air Shutter Module C |
| U028C | Lost Communication With Active Grille Air Shutter Module D |
| U028D | Lost Communication With Active Aerodynamic Feature Control Module A |
| U028E | Lost Communication With Active Aerodynamic Feature Control Module B |
| U028F | Lost Communication With Active Aerodynamic Feature Control Module C |
| U0290 | Lost Communication With Active Aerodynamic Feature Control Module D |
| U0291 | Lost Communication With Gear Shift Control Module B |
| U0292 | Lost Communication With Drive Motor Control Module B |
| U0293 | Lost Communication with Hybrid Vehicle Control System |
| U0294 | Lost Communication with Powertrain Control Module B |
| U0295 | Lost Communication with Power Steering Control Module |
| U0296 | Lost Communication With AC/DC Converter Control Module A |
| U0297 | Lost Communication with Hybrid Powertrain Control Module |
| U0298 | Lost Communication With DC/DC Converter Control Module A |
| U0299 | Lost Communication With DC/DC Converter Control Module B |
| U029A | Lost Communication With Hybrid/EV Battery Pack Sensor Module |
| U029B | Lost Communication With Drive Motor Control Module C |
| U029C | Lost Communication With Drive Motor Control Module D |
| U029D | Lost Communication With NOx Sensor A |
| U029E | Lost Communication With NOx Sensor B |
| U029F | Lost Communication With Evaporative Emission System Leak Detection Control Module |
| U02A0 | Invalid Data Received From Hybrid/EV Battery Interface Control Module D |
| U02A1 | Lost Communication With NOx Sensor C |
| U02A2 | Lost Communication With Reductant Quality Module |
| U02A3 | Lost Communication With Particulate Matter Sensor |
| U02A4 | Lost Communication With NH3 Sensor |
| U02A5 | Lost Communication With Reductant Heater Control Module |
| U02A6 | Lost Communication With Safety Integration Control Module |
| U02A7 | Lost Communication With Engine Sound Control 1 |
| U02A8 | Lost Communication With Engine Sound Control 2 |
| U02A9 | Lost Communication With Charge Air Cooler Coolant Pump A |
| U02AA | Lost Communication With Engine Disconnect Clutch |
| U02AB | Lost Communication With Vehicle Thermal Management Control Module |
| U02AC | Lost Communication With Turbocharger/Supercharger Boost Control A |
| U02AD | Lost Communication With Turbocharger/Supercharger Boost Control B |
| U02AE | Lost Communication With Hybrid/EV Battery Coolant Pump |
| U02AF | Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor |
| U02B0 | Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor |
| U02B1 | Lost Communication With Comfort and Convenience Display A |
| U02B2 | Lost Communication With Comfort and Convenience Display B |
| U02B3 | Lost Communication With Driver Monitoring System Module |
| U02B4 | Lost Communication With Front Radar Module A |
| U02B5 | Lost Communication With Front Radar Module B |
| U02B6 | Lost Communication With Rear Radar Module A |
| U02B7 | Lost Communication With Rear Radar Module B |
| U02B8 | Lost Communication With Rear Radar Module C |
| U02B9 | Lost Communication With Rear Radar Module D |
| U02BA | Lost Communication With Hybrid/EV Electronics Coolant Pump B |
| U02BB | Lost Communication With EVAP System Purge Pump |
| U02BC | Lost Communication With Localization and Mapping Module |
| U02BD | Lost Communication With Night Vision Control Module |
| U02BE | Lost Communication With Trailer Backup Assist Control Module |
| U02BF | Lost Communication With Interior Lighting Control Module B |
| U02C0 | Lost Communication With Active Radiator Air Flow Control Module A |
| U02C1 | Lost Communication With Hybrid/EV Electronics Coolant Pump C |
To understand a code on your car (probable causes, what to check first), the DiagAuto AI app explains it using AI. Discover the app
Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.