Home >> Land Rover >> 2015 >> LR4 HSE, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) -- LR4/L319 >> Diagnostic Trouble Code Index DTC: Audio Amplifier Module (AAM) >> Description And Operation >> DTC B1A09-1A: Speaker #9 - Circuit resistance below threshold >> Possible Causes