Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> 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 U0046-83: Vehicle Communication Bus C - Value of signal protection calculation incorrect >> Possible Causes