Home › Jaguar › 2012 › XJ Base › Repair and Diagnosis › Transmission › Transmission Control Systems › Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Module (TCM) › Description And Operation › Transmission Control Module (TCM) › DTC U3000-9A: Control Module - Component or system operating conditions › Possible Causes