Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Quick Lookups >> 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 B128A-13: Speaker #13 - Circuit open >> Possible Causes