Retrieving & Erasing Diagnostic Trouble Codes
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 1999 BMW Z3, 1999 BMW M3, 1999 BMW M Roadster, 1999 BMW M Coupe, and 1999 BMW 750iL. However, it is still accessible from the selected car via links, so may be relevant.
OBD-II and BMW Diagnostic Trouble Codes (DTC) can be retrieved or erased using BMW or a generic scan tool connected to Data Link Connector (DLC). See Figure-Figure . Follow scan tool manufacturer's instructions. BMW diagnostic hardware directs user to a specific test routine which provides diagnostic information.