Home › Jaguar › 2018 › F-Pace Base › Repair and Diagnosis › Steering › Steering Control Systems › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) (F-Pace) › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) › Description And Operation › Electric Steering Column Lock Control Module (ESCL) › DTC B100D-29: Column Lock Authorization - Signal invalid › Possible Causes