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DTC codes / U04xx · Invalid data received from a module / U04BD

U04BDInvalid Data Received From Park Lock/Pawl Control Module

The U04BD code indicates that the vehicle's computer network received invalid or missing data from the park lock/pawl control module, which manages the parking lock mechanism. The computer detected a communication fault where the expected data was either corrupted, out of range, or not received within the required time frame.

SystemNetwork
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
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.

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