Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Gateway Module -- XJ/X351 >> DIAGNOSTIC TROUBLE CODE (DTC) INDEX DTC: Gateway Module >> Description And Operation >> Gateway Module (GWM) >> B1404-13 Charging System - Circuit open >> Possible Causes