Home › Jaguar › 2016 › XF S, AWD › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- XF/X260 › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) › Description And Operation › Automatic Temperature Control Module (ATCM) › DTC U2101-56: Control Module Configuration Incompatible - Invalid/incomplete configuration › Possible Causes