Home >> Land Rover >> 2014 >> Range Rover Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- Range Rover/L405 >> 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