Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) >> Description And Operation >> DTC B1A12-11: Speaker #12 - Circuit short to ground >> Possible Causes