Home › Jaguar › 2016 › XF S, AWD › Repair and Diagnosis › Transmission › Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- XF/X260 › Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCM) › Description And Operation › Transfer Case Control Module (TCM) › DTC U0300-4A: Internal Control Module Software Incompatibility - Incorrect component installed › Possible Causes