Home › Land Rover › 2013 › Range Rover Base › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) › Description And Operation › DTC U3000-98: Control Module - Component or system over temperature › Possible Causes