DTC codes / U04xx · Invalid data received from a module / U049F
This code means the transmission control module (TCM) or another onboard computer received data from the transmission range control module that it judged invalid or out of range. The range control module reports which gear range the transmission is actually in, and when that message is missing, corrupted, or contradictory, the receiving module stores U049F.
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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