Home >> Land Rover >> 2013 >> Range Rover HSE >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) >> Description And Operation >> DTC B0020-12: Left Side Airbag Deployment Control - Circuit short to battery >> Possible Causes