Home › Land Rover › 2014 › Range Rover Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper/Lower -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper / Lower › Description And Operation › DTC U3000-45: Control Module - Program memory failure › Possible Causes