Home >> Jaguar >> 2017 >> XF S, RWD >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> 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 P0634-68: Control Module Internal Temperature A Too High - Event information >> Possible Causes