Home >> Jaguar >> 2018 >> F-Pace S >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) - F-Pace >> Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) >> Description And Operation >> Automatic Temperature Control Module (ATCM) >> DTC B12B2-12: AUX Heater Coolant Diverter Valve - Circuit short to battery >> Possible Causes