Home >> Land Rover >> 2021 >> Discovery S >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Gateway Module (GWM) -- Discovery/L462 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index: Gateway Module (GWM) (G2165407) >> DTC U0055-81: Vehicle Communication Bus D - Invalid serial data received >> Possible Causes