Home › Land Rover › 2013 › Range Rover Sport HSE Lux › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC) -- Range Rover Sport/L320 › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATC) › Description And Operation › DTC U3000-55 Control Module - Not configured › Possible Causes