What does code U025D mean?

Q: What does code U025D mean?

Lost Communication With Front Controls Interface Module B. U025D 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 Front Controls Interface Module B, which typically handles climate, audio, or other front-occupant interface functions. The module that set the code expected regular status messages from that interface module and stopped receiving them for a calibrated time period, so it flagged the missing communication.

DTC codes / U02xx · Lost communication with a control module / U025D

U025DLost Communication With Front Controls Interface Module B

U025D 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 Front Controls Interface Module B, which typically handles climate, audio, or other front-occupant interface functions. The module that set the code expected regular status messages from that interface module and stopped receiving them for a calibrated time period, so it flagged the missing communication.

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.