Home >> Land Rover >> 2013 >> Range Rover Sport HSE >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Audio Amplifier Control Module (AAM) -- Range Rover Sport/L320 >> Diagnostic Trouble Code Index DTC: Audio Amplifier Control Module (AAM) >> Description And Operation >> DTC B1A03-13: Speaker #3 - Circuit open >> Possible Causes