Home › Land Rover › 2017 › Discovery SE › Repair and Diagnosis › Engine Performance › Engine Control Systems › 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 B1A84-81: Car Configuration Data - Invalid Serial Data Received › Possible Causes