Home >> Land Rover >> 2015 >> LR2 Base >> Repair and Diagnosis (Single Page) >> General Information >> DTC Index >> 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 B1D78-11: Auxiliary Input - Circuit short to ground >> Possible Causes