Home >> Land Rover >> 2015 >> LR4 HSE, AWD >> Repair and Diagnosis >> Steering >> Steering Column >> 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-42: Column Lock Authorization - General memory failure >> Possible Causes