Home >> Jaguar >> 2017 >> XJR Base >> Repair and Diagnosis >> Quick Lookups >> 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) >> U0037-81 Vehicle Communication Bus B - Invalid serial data received >> Possible Causes