What does code U0248 mean?

Q: What does code U0248 mean?

Lost Communication With Remote Accessory Module. U0248 is a network communication code indicating that a control module on the vehicle's data bus has lost contact with the remote accessory module, which typically handles functions like keyless entry, remote start, or power liftgate operation. The computer detected that expected periodic messages from this module stopped arriving within a set time window, setting the code and often illuminating the warning light.

DTC codes / U02xx · Lost communication with a control module / U0248

U0248Lost Communication With Remote Accessory Module

U0248 is a network communication code indicating that a control module on the vehicle's data bus has lost contact with the remote accessory module, which typically handles functions like keyless entry, remote start, or power liftgate operation. The computer detected that expected periodic messages from this module stopped arriving within a set time window, setting the code and often illuminating the warning light.

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.