Home › Land Rover › 2014 › Range Rover Base › Repair and Diagnosis › Engine Performance › Engine Control Systems › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) › Description And Operation › DTC U3000-44: Control Module - Data memory failure › Possible Causes