What does code U0228 mean?

Q: What does code U0228 mean?

Lost Communication With 'Door Window Motor G'. U0228 is a generic network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the door window motor designated as 'G'. The module that sets this code has detected that the expected periodic status messages from that specific window motor have stopped arriving within the required time window, which points to a communication failure rather than a direct motor command fault.

DTC codes / U02xx · Lost communication with a control module / U0228

U0228Lost Communication With 'Door Window Motor G'

U0228 is a generic network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the door window motor designated as 'G'. The module that sets this code has detected that the expected periodic status messages from that specific window motor have stopped arriving within the required time window, which points to a communication failure rather than a direct motor command fault.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaLost communication with a control module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.