DTC U0401: Invalid Data Received from ECM/PCM A: Action
RETRIEVE and RECORD all PCM DTCs. REFER to the ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) (SECTION 4) to diagnose the engine speed or vehicle speed concern.
RETRIEVE and RECORD all PCM DTCs. REFER to the ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) (SECTION 4) to diagnose the engine speed or vehicle speed concern.