DTC codes / U04xx · Invalid data received from a module / U047F
This code means the module that controls the seat belt pretensioner on one side of the vehicle is sending data the rest of the network cannot trust, so a safety controller has flagged the message as invalid. The computer detected a corrupted, missing, or out-of-range serial data message from the pretensioner module rather than a direct circuit failure.
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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