Home >> Jaguar >> 2013 >> XF 2.0 >> Repair and Diagnosis >> Quick Lookups >> 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 P0A1A-87: Generator Control Module - Missing message >> Possible Causes