U0401 CHRYSLER - Invalid Data Received From ECM/PCM
U0401 Chrysler DescriptionThis diagnostic checks the validity of the two Control Area Network (CAN) messages sent by the Powertrain Control Module (PCM) containing information about the engine torque. The diagnostic checks the validity by performing a CRC and message counter check be sure the CAN messages are continuously updated by the PCM and they contain valid values.
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