Home › Jaguar › 2014 › XK Base, 2D Convertible › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Rear Differential Control Module (RDCM) -- XK/X150 › Diagnostic Trouble Code Index DTC: Rear Differential Control Module (RDCM) › Description And Operation › Rear Differential Control Module › DTC U1A14-49: CAN Initialization Failure - Internal electronic failure › Possible Causes