Home › Jaguar › 2014 › XF Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code (DTC) Index DTC: Gateway Module (GWM) -- XF/X250 › Diagnostic Trouble Code (DTC) Index DTC: Gateway Module (GWM) › Description And Operation › DTC U0300-46: Internal Control Module Software Incompatibility - Calibration/parameter memory failure › Possible Causes