Home › Land Rover › 2014 › LR4 HSE, AWD › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC) -- LR4/L319 › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC) › Description And Operation › DTC U3000-87: Control Module - Missing message › Possible Causes