Home › Land Rover › 2017 › Discovery Sport SE › Repair and Diagnosis › Engine Performance › Engine Control Systems › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- Discovery Sport/L550 › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) › Description And Operation › DTC U0300-56: Internal Control Module Software Incompatibility - Invalid/incomplete configuration › Possible Causes