Home >> Jaguar >> 2013 >> XF 2.0 >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code (DTC) Index DTC: Gateway Module (GWM) -- XF/X250 >> Diagnostic Trouble Code (DTC) Index DTC: Gateway Module (GWM) >> Description And Operation >> DTC B13D6-87: Battery Monitoring Module "B" - Missing message >> Possible Causes