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DTC codes / U02xx · Lost communication with a control module / U02BE

U02BELost Communication With Trailer Backup Assist Control Module

This code means the vehicle's main network lost contact with the trailer backup assist control module, a dedicated unit that helps steer a trailer while reversing. The computer detected that the module stopped sending its regular heartbeat messages on the communication bus, so it flagged the missing node as a fault.

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.

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