Home › Land Rover › 2016 › LR4 Base › Repair and Diagnosis (Single Page) › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Integrated Audio Module (IAM) - High Line -- LR4/L319 › Diagnostic Trouble Code Index DTC: Integrated Audio Module (IAM) - High Line › Description Of Operation › DTC U200D-13: Control Module Output Power A - Circuit open › Possible Causes