Home › Jaguar › 2018 › XE S, RWD › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) › Description And Operation › Body Control Module (BCM) › B12CA-12 Start/Stop Eco-Start Status Indicator - Circuit short to battery › Possible Causes