Network Codes
1,532 OBD-II diagnostic trouble codes in this category.
Showing page 4 of 16 (1,532 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| U0202 | Lost Communication with Door Control Module D | Door Module | Low |
| U0203 | Lost Communication With Door Control Module E | Door Module | Medium |
| U0204 | Lost Communication With Door Control Module F | Door Module | Medium |
| U0205 | Lost Communication With Door Control Module G | Door Module | Medium |
| U0206 | Lost Communication With Folding Top Control Module | Module Communication | High |
| U0207 | Lost Communication With Moveable Roof Control Module A | Module Communication | High |
| U0208 | Lost Communication With Seat Control Module A | Module Communication | High |
| U0209 | Lost Communication With Seat Control Module B | Module Communication | High |
| U020A | Lost Communication With Moveable Roof Control Module “B” | Module Communication | High |
| U020B | Lost Communication With Door Control Module H | Door Module | Medium |
| U020C | Lost Communication With Wireless Accessory Charging Module A | Module Communication | High |
| U020D | Lost Communication With Wireless Accessory Charging Module B | Module Communication | High |
| U0210 | Lost Communication With Seat Control Module C | Module Communication | High |
| U0211 | Lost Communication With Seat Control Module D | Module Communication | High |
| U0212 | Lost Communication With Steering Column Control Module | Steering Module | High |
| U0213 | Lost Communication With Mirror Control Module A | Module Communication | High |
| U0214 | Lost Communication with Remote Keyless Entry Module | Keyless Entry | Low |
| U0215 | Lost Communication With Door Switch A | Door Module | Medium |
| U0216 | Lost Communication With Door Switch B | Door Module | Medium |
| U0217 | Lost Communication With Door Switch C | Door Module | Medium |
| U0218 | Lost Communication With Door Switch D | Door Module | Medium |
| U0219 | Lost Communication With Door Switch E | Door Module | Medium |
| U0220 | Lost Communication With Door Switch F | Door Module | Medium |
| U0221 | Lost Communication With Door Switch G | Door Module | Medium |
| U0222 | Lost Communication With Door Window Motor A | Door Module | Medium |
| U0223 | Lost Communication With Door Window Motor B | Door Module | Medium |
| U0224 | Lost Communication With Door Window Motor C | Door Module | Medium |
| U0225 | Lost Communication With Door Window Motor D | Door Module | Medium |
| U0226 | Lost Communication With Door Window Motor E | Door Module | Medium |
| U0227 | Lost Communication With Door Window Motor F | Door Module | Medium |
| U0228 | Lost Communication With Door Window Motor G | Door Module | Medium |
| U0229 | Lost Communication With Heated Steering Wheel Module | Steering Module | High |
| U022E | Lost Communication With Object Detection Maintenance Control Module A | Module Communication | High |
| U022F | Lost Communication With Object Detection Maintenance Control Module B | Module Communication | High |
| U0230 | Lost Communication with Rear Camera Module | Camera System | Medium |
| U0231 | Lost Communication With Rain Sensing Module | Module Communication | High |
| U0232 | Lost Communication With Side Obstacle Detection Control Module A | Module Communication | High |
| U0233 | Lost Communication With Side Obstacle Detection Control Module B | Module Communication | High |
| U0234 | Lost Communication With Convenience Recall Module | Module Communication | High |
| U0235 | Lost Communication with Cruise Control Distance Sensor | ADAS | Medium |
| U0236 | Lost Communication With Column Lock Module | Module Communication | High |
| U0237 | Lost Communication With Digital Audio Control Module C | Entertainment | Low |
| U0238 | Lost Communication With Digital Audio Control Module D | Entertainment | Low |
| U0239 | Lost Communication With Entrapment Control Module A | Module Communication | High |
| U023A | Lost Communication With Image Processing Module A | Module Communication | High |
| U023B | Lost Communication With Image Processing Module B | Module Communication | High |
| U023C | Lost Communication With Image Processing Module C | Module Communication | High |
| U023D | Lost Communication With Front Distance Range Sensor - Left | Module Communication | High |
| U023E | Lost Communication With Front Distance Range Sensor - Right | Module Communication | High |
| U0240 | Lost Communication With Entrapment Control Module B | Module Communication | High |
| U0241 | Lost Communication With Headlamp Control Module A | Module Communication | High |
| U0242 | Lost Communication With Headlamp Control Module B | Module Communication | High |
| U0243 | Lost Communication With Parking Assist Control Module B | Parking Assist | Medium |
| U0244 | Lost Communication With Running Board Control Module A | Module Communication | High |
| U0245 | Lost Communication With Entertainment Control Module - Front | Module Communication | High |
| U0246 | Lost Communication With Seat Control Module E | Module Communication | High |
| U0247 | Lost Communication With Seat Control Module F | Module Communication | High |
| U0248 | Lost Communication With Remote Accessory Module | Module Communication | High |
| U0249 | Lost Communication With Entertainment Control Module - Rear B | Module Communication | High |
| U024A | Lost Communication With Interior Lighting Control Module A | Module Communication | High |
| U024B | Lost Communication With Seat Control Module G | Module Communication | High |
| U024C | Lost Communication With Seat Control Module H | Module Communication | High |
| U024D | Lost Communication With Seat Control Module J | Module Communication | High |
| U024E | Lost Communication With Side Obstacle Detection Control Module C | Module Communication | High |
| U024F | Lost Communication With Side Obstacle Detection Control Module D | Module Communication | High |
| U0250 | Lost Communication With Impact Classification System Module | Module Communication | High |
| U0251 | Lost Communication With Running Board Control Module B | Module Communication | High |
| U0252 | Lost Communication With Lighting Control Module - Rear B | Module Communication | High |
| U0253 | Lost Communication with Transmission Range Sensor Module | Transmission Sensor | High |
| U0254 | Lost Communication With Remote Start Module | Module Communication | High |
| U0255 | Lost Communication With Front Display Interface Module | Module Communication | High |
| U0256 | Lost Communication with Front Distance Ranging Sensor | ADAS | Critical |
| U0257 | Lost Communication With Front Controls/Display Interface Module | Module Communication | High |
| U0258 | Lost Communication With Radio Transceiver | Entertainment | Low |
| U0259 | Lost Communication With Special Purpose Vehicle Control Module A | Module Communication | High |
| U025A | Lost Communication With Special Purpose Vehicle Control Module B | Module Communication | High |
| U025B | Lost Communication With Special Purpose Vehicle Control Module C | Module Communication | High |
| U025C | Lost Communication With Special Purpose Vehicle Control Module D | Module Communication | High |
| U025D | Lost Communication With Front Controls Interface Module B | Module Communication | High |
| U025E | Lost Communication With Electronic Brake Booster Control Module A | ABS Communication | Critical |
| U025F | Lost Communication With Electronic Brake Booster Control Module B | ABS Communication | Critical |
| U0260 | Lost Communication With Seat Control Switch Module A | Module Communication | High |
| U0261 | Lost Communication With Seat Control Switch Module B | Module Communication | High |
| U0262 | Lost Communication With Audio Amplifier B | Entertainment | Low |
| U0263 | Lost Communication With Speech Recognition Module | Module Communication | High |
| U0264 | Lost Communication With Camera Module - Rear | Camera System | Medium |
| U0265 | Lost Communication With Image Processing Sensor A | Module Communication | High |
| U0266 | Lost Communication With Image Processing Sensor B | Module Communication | High |
| U0267 | Lost Communication With Image Processing Sensor C | Module Communication | High |
| U0268 | Lost Communication With Image Processing Sensor D | Module Communication | High |
| U0269 | Lost Communication With Image Processing Sensor E | Module Communication | High |
| U026A | Lost Communication With Image Processing Sensor F | Module Communication | High |
| U026B | Lost Communication With Image Processing Sensor G | Module Communication | High |
| U026C | Lost Communication With Image Processing Sensor H | Module Communication | High |
| U026D | Lost Communication With Image Processing Sensor I | Module Communication | High |
| U026E | Lost Communication With Image Processing Sensor J | Module Communication | High |
| U026F | Lost Communication With Image Processing Sensor K | Module Communication | High |
| U0270 | Lost Communication With Image Processing Sensor L | Module Communication | High |
| U0271 | Lost Communication With Seat Control Switch Module C | Module Communication | High |
| U0272 | Lost Communication With Seat Control Switch Module D | Module Communication | High |
About Network Codes
This page lists all 1,532 OBD-II diagnostic trouble codes classified under the Network category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the network system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.