Home › Land Rover › 2017 › Range Rover Supercharged › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Head-Up Display Cooling Fan Control Module -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Head-Up Display Cooling Fan Control Module › Description And Operation › DTC U3000-49: Control Module - Internal Electronic Failure › Possible Causes