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DTC codes / U05xx · Network communication / U054A

U054AInvalid Data Received From Entertainment Control Module - Rear B

U054A is a communication fault where a control module on the vehicle's network receives data from the rear entertainment control module (module B) that it considers invalid or corrupted. The receiving module has detected that the messages from the rear entertainment control module are missing expected values, out of range, or otherwise unusable, so it sets this code and may disable features that depend on that data.

SystemNetwork
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaNetwork communication

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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