Home › Land Rover › 2014 › LR4 Base, AWD › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) -- LR4/L319 › Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) › Description And Operation › DTC B100D-64: Column Lock Authorization - Signal plausibility failure › Possible Causes