Home › Jaguar › 2017 › F-Pace First Edition › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) - F-Pace › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) › Description And Operation › Body Control Module (BCM) › DTC B1C43-23: Master Interior Light Switch - Signal stuck low › Possible Causes