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 U0300-55: Internal Control Module Software Incompatibility - Not Configured › Possible Causes