Home >> Land Rover >> 2015 >> Range Rover Base >> Repair and Diagnosis >> General Information >> 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 B144B-15: Anti-Pinch Hardwired Signal Input - Circuit short to battery or open >> Possible Causes