Home › Jaguar › 2016 › XF Prestige, AWD › Repair and Diagnosis › Engine Performance › Engine Control Systems › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) -- XF/X260 › Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) › Description And Operation › Adaptive Speed Control Module (ASCM) › DTC U3000-44: Control Module - Data memory failure › Possible Causes