Block of codes
U02xx codes: lost communication with other control modules
This block brings together the codes from U0212 to U0235 in the glossary. Open yours to see what it means, its causes and whether you can keep driving.
Reviewed by Daniel Morales, founder of Reprorace SL, on
What this block covers
Communication network
Control units talk to each other over buses such as CAN. A U code means one control unit has stopped hearing another: the cause may be that other unit, the wiring or the power supply, often a low battery.
The 7 codes of the block
- U0212Lost communication with steering column control module
- U0214Lost communication with remote function actuation module
- U0229Lost communication with heated steering wheel module
- U0230Lost communication with rear gate module
- U0231Lost communication with rain sensing module
- U0232Lost communication with side obstacle detection control module A
- U0235Lost communication with front distance range sensor (single sensor or center)
Other blocks
Read your car's fault codes on your phone
With an ECO-LITE in the OBD socket you see the codes in your account, with the data captured when the fault happened, and your workshop can check them remotely, always with your permission.
Keep reading
- OBD fault codes: what each one means
- Check engine light on: what to do
- How to read and clear your car's fault codes
- Will your car pass its MOT or inspection with the engine light on?
- Wi-Fi OBD2 reader: which one to choose
- Reading fault codes by car make
- Remote OBD diagnostics: what it is, how it works and what it can't do
- Vehicle diagnostics glossary