Home >> Jaguar >> 2012 >> XJ Base >> Repair and Diagnosis (Single Page) >> 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) >> U0001-81 High Speed CAN Communication Bus - Invalid serial data received >> Possible Causes