Home › Jaguar › 2017 › F-Pace First Edition › 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 U0046-81: Vehicle Communication Bus C - Invalid serial data received › Possible Causes