Home >> Jaguar >> 2012 >> XJ Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> Diagnostic Trouble Code: Central Junction Box (CJB) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Central Junction Box (CJB) >> Description And Operation >> Central Junction Box (CJB) >> DTC B1D17-96: Battery Backed Sounder - Component internal failure >> Possible Causes