Home › Jaguar › 2010 › XJ L › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Module (TCM) › Description And Operation › Transmission Control Module (TCM) › DTC U0001-81: High Speed CAN Communication Bus - Invalid serial data received › Possible Causes