Home › Jaguar › 2018 › F-Pace Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) - F-Pace › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) › Description And Operation › Telematics Control Module (TCU) › DTC B1A56-12: Antenna - Circuit Short To Battery › Possible Causes