Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Driver/Passenger Door Module (DDM/PDM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Driver / Passenger Door Module (DDM / PDM) >> Description And Operation >> DTC U0046-81: Vehicle Communication Bus C - Invalid serial data received >> Possible Causes