What does code U0494 mean?

Q: What does code U0494 mean?

Invalid Data Received From Digital Audio Control Module A. U0494 is a communication fault indicating that a control module on the vehicle's network received invalid or corrupted data from the Digital Audio Control Module A, which is the module responsible for managing audio signals and entertainment functions. The receiving module detected that the data packets from the audio module did not match the expected format or contained out-of-range values, so it flagged the signal as invalid rather than treating it as a normal status update.

DTC codes / U04xx · Invalid data received from a module / U0494

U0494Invalid Data Received From Digital Audio Control Module A

U0494 is a communication fault indicating that a control module on the vehicle's network received invalid or corrupted data from the Digital Audio Control Module A, which is the module responsible for managing audio signals and entertainment functions. The receiving module detected that the data packets from the audio module did not match the expected format or contained out-of-range values, so it flagged the signal as invalid rather than treating it as a normal status update.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaInvalid data received from a 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.