Home >> Jaguar >> 2013 >> XF 3.0, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Navigation Control Module (NCM) - Extended Markets -- XF/X250 >> Diagnostic Trouble Code (DTC) Index DTC: Navigation Control Module (NCM) - Extended Markets >> Description And Operation >> DTC B1A81-4B: Internal Trip Switch - Over temperature >> Possible Causes