Home >> Land Rover >> 2015 >> LR2 Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Central Junction Box (CJB) -- LR2/L359 >> Diagnostic Trouble Code Index DTC: Central Junction Box (CJB) >> Description And Operation >> DTC B1C37-23: Master Lock Switch Stuck - Signal stuck low >> Possible Causes