What does P0863 Mean? OBD-II Code Transmission may not shift properly is defined as a TCM Communication Circuit If the Transmission Control Module (TCM) cannot communicate with other modules or the engine control module (PCM) can not communicate with the PCM, code P0863 will be set. engine code P0863P0863 fixobd P0863dtc P0863obd code P0863obd2 P0863P0863 car codediagnostic code P0863car code P0863check engine code P0863fehlercode P0863P0863 fiatcodigo P0863codigo falla P0863P0863 kody b??dówcodigo de falla P0863 What are the common causes of P0863 ? Faulty Transmission Control Module (TCM) Transmission Control Module (TCM) harness is open or shorted Transmission Control Module (TCM) circuit poor electrical connection Faulty Engine Control Module (ECM) How do you troubleshoot P0863 ? Look at the plug wires to make sure they are not burnt or laying on the exhaust. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Searches related to P0863 Code - TCM Communication Circuit P0863 P0864
