Home › Land Rover › 2013 › Range Rover Base › Repair and Diagnosis (Single Page) › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) › Description And Operation › DTC B100D-51: Column Lock Authorisation - Not programmed › Possible Causes