What does code U0218 mean?

Q: What does code U0218 mean?

Lost Communication With 'Door Switch D'. U0218 is a network communication code indicating that a control module on the vehicle's data bus has lost contact with the door switch module designated as 'D'. The computer detected that expected messages from that specific door switch module stopped arriving within the required time window, which can affect door ajar warnings, interior lighting, and security functions.

DTC codes / U02xx · Lost communication with a control module / U0218

U0218Lost Communication With 'Door Switch D'

U0218 is a network communication code indicating that a control module on the vehicle's data bus has lost contact with the door switch module designated as 'D'. The computer detected that expected messages from that specific door switch module stopped arriving within the required time window, which can affect door ajar warnings, interior lighting, and security functions.

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.