Home >> Jaguar >> 2014 >> XF Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code: Rear Junction Box (RJB) -- XF/X250 >> Diagnostic Trouble Code (DTC) IndexDTC: Rear Junction Box (RJB) >> Description And Operation >> DTC B1407-87: Trailer Module - missing message >> Possible Causes