Home › Land Rover › 2014 › Range Rover Base › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) › Description And Operation › DTC U3000-44: Control Module - Data memory failure › Possible Causes