Home › Jaguar › 2018 › F-Pace S › Repair and Diagnosis › Engine Performance › Engine Control Systems › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) - F-Pace › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) › Description And Operation › Adaptive Speed Control Module (ASCM) › DTC B1A84-81: Car Configuration Data - Invalid serial data received › Possible Causes