What does code U0479 mean?

Q: What does code U0479 mean?

Invalid Data Received From Restraints System Sensor I. U0479 is a communication fault where the restraints control module (RCM) or another network node receives invalid or missing data from a restraints system sensor, typically a crash or occupant detection sensor. The computer has detected a data stream that does not match expected values or is absent when the ignition is on, so it flags the sensor's signal as invalid rather than a hard circuit failure.

DTC codes / U04xx · Invalid data received from a module / U0479

U0479Invalid Data Received From Restraints System Sensor I

U0479 is a communication fault where the restraints control module (RCM) or another network node receives invalid or missing data from a restraints system sensor, typically a crash or occupant detection sensor. The computer has detected a data stream that does not match expected values or is absent when the ignition is on, so it flags the sensor's signal as invalid rather than a hard circuit failure.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

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.