Home >> Land Rover >> 2019 >> Range Rover Base, 3.0L Eng VIN K >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Automatic Temperature Control Module (ATCM) (G2164849) >> DTC U3000-04: Control Module - System internal failures >> Possible Causes