Home >> Land Rover >> 2013 >> Range Rover HSE >> 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 U3000-66: Control Module - Signal has too many transitions/events >> Possible Causes