Home › Jaguar › 2014 › XF Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- XF/X250 › Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Module (TCM) › Description And Operation › DTC P0721-62: Output Shaft Speed Sensor Circuit Range/Performance - Signal compare failure › Possible Causes