What does code U0204 mean?

Q: What does code U0204 mean?

Lost Communication With 'Door Control Module F'. U0204 is a network communication fault indicating that one or more control modules have stopped receiving messages from the module designated as Door Control Module F over the vehicle's Controller Area Network (CAN) bus. The detecting module sets this code when it expects periodic status frames from that door module and the frames stop arriving within the allowed timeout window.

DTC codes / U02xx · Lost communication with a control module / U0204

U0204Lost Communication With 'Door Control Module F'

U0204 is a network communication fault indicating that one or more control modules have stopped receiving messages from the module designated as Door Control Module F over the vehicle's Controller Area Network (CAN) bus. The detecting module sets this code when it expects periodic status frames from that door module and the frames stop arriving within the allowed timeout window.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

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.