U02xx codes: lost communication — doors, seats, roof and other body modules
44 codes in this range, all generic — the same meaning on every make. Codes stored when one module stops receiving messages from another — the engine or transmission computer, ABS, airbags, body control, instrument cluster or dozens of others. The code names the module that went silent, not the one that stored it.
What usually causes codes in this area
- Low battery voltage or a poor battery connection
- A blown fuse or failed relay feeding the silent module
- Damaged network wiring or a corroded connector
- A failed module
Can you keep driving?
It depends on which module is missing: the engine, transmission, ABS or airbag module — have it checked straight away; comfort modules can wait. A weak battery can set many of these codes at once, so check it first.
All U02xx codes
| 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 |
| U0208 | Lost Communication With Seat Control Module "A" |
| U0209 | Lost Communication With Seat Control 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 Switch "A" |
| U0216 | Lost Communication With Door Switch "B" |
| U0217 | Lost Communication With Door Switch "C" |
| U0218 | Lost Communication With Door Switch "D" |
| U0219 | Lost Communication With Door Switch "E" |
| U0220 | Lost Communication With Door Switch "F" |
| U0221 | Lost Communication With Door Switch "G" |
| U0222 | Lost Communication With Door Window Motor "A" |
| 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 |
| U0230 | Lost Communication With Rear Gate Module |
| U0231 | Lost Communication With Rain Sensing Module |
| U0232 | Lost Communication With Side Obstacle Detection Control Module (Left) |
| U0233 | Lost Communication With Side Obstacle Detection Control Module (Right) |
| U0234 | Lost Communication With Convenience Recall Module |
| U0235 | Lost Communication With Cruise Control Front Distance Range Sensor |
| U0236 | Lost Communication With Column Lock Module |
| U0284 | Lost Communication With Body Control Module "B" |
| U0293 | Lost Communication With Hybrid/EV Powertrain Control Module |
| U0294 | Lost Communication With Powertrain Control Monitor Module |
| U0295 | Lost Communication With AC to AC Converter Control Module |
| U0296 | Lost Communication With AC to DC Converter Control Module |
| U0297 | Lost Communication With DC to AC Converter Control Module |
| U0298 | Lost Communication With DC to DC Converter Control Module |
Read the codes from your own car
Plug an inexpensive Bluetooth LE or Wi-Fi OBD2 adapter into the port under the dashboard, and Brimly on your iPhone reads the stored, pending and permanent codes, explains each one offline and clears them once the fault is fixed. OBD diagnostics are part of Brimly Forever, a one-time purchase.
Requires iOS 18.1 or later. Free to download, with optional in-app purchases.