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 P0601-42: Internal Control Module Memory Checksum Error - General memory failure › Possible Causes