Home >> Land Rover >> 2014 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper/Lower -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper / Lower >> Description And Operation >> DTC B11C4-23: Boot/Trunk Close Button - Signal stuck low >> Possible Causes