Home >> Land Rover >> 2015 >> LR2 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Diagnostic Trouble Code Index DTC: Integrated Audio Module (IAM) - High Line -- LR2/L359 >> Diagnostic Trouble Code Index DTC: Integrated Audio Module (IAM) - High Line >> Description And Operation >> DTC B1D79-13: Microphone Input - Circuit open >> Possible Causes