Home › Jaguar › 2014 › XF Base › Repair and Diagnosis › Transmission › Transmission Control Systems › Diagnostic Trouble Code Index DTC: Transmission Control Switch (TCS) -- XF/X250 › Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Switch (TCS) › Description And Operation › DTC P0605-45: Internal Control Module Read Only Memory (ROM) Error - Program memory failure › Possible Causes