Home >> Land Rover >> 2013 >> Range Rover Sport Autobiography >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Headlamp Leveling Control Module (HCM) -- Range Rover Sport/L320 >> Diagnostic Trouble Code Index DTC: Headlamp Leveling Control Module (HCM) >> Description And Operation >> DTC B1041-04: Levelling Control - System internal failures >> Possible Causes