DTC codes / U04xx · Invalid data received from a module / U0483
U0483 is a communication fault where the module that coordinates your vehicle's network (often the body control module or gateway) receives invalid or corrupted data from the front lighting control module. The computer detects that the messages coming from the front lighting module do not match expected values or are missing critical information, so it flags the data as invalid rather than simply missing.
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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