Home › Land Rover › 2015 › Range Rover Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Infotainment Master/Slave Controller (ISC/IMC) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Infotainment Master / Slave Controller (ISC / IMC) › Description And Operation › DTC U3000-04: Control Module - System internal failures › Possible Causes