Home › Land Rover › 2015 › Range Rover Evoque Autobiography › Repair and Diagnosis › Steering › Steering Control Systems › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) -- Range Rover EVOQUE/L538 › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) › Description And Operation › DTC B100D-51: Column Lock Authorization - Not programmed › Possible Causes