Home >> Jaguar >> 2017 >> XF S, RWD >> Repair and Diagnosis >> Steering >> Steering Column >> Diagnostic Trouble Code Index DTC: Electric Steering Column Lock Control Module (ESCL) -- XF/X260 >> 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