Home >> Land Rover >> 2017 >> Discovery SE >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- Discovery/L462 >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) >> Description And Operation >> DTC U0046-81: Vehicle Communication Bus C - Invalid Serial Data Received >> Possible Causes