Home › Jaguar › 2013 › XJ Base, AWD › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code (DTC) Index DTC: Transfer Case Control Module (TCCM) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Transfer Case Control Module (TCCM) › Description And Operation › Transfer Case Control Module (TCCM) › U0001-88 High Speed CAN Communication Bus - Bus off › Possible Causes