On-board diagnostics (OBD) refers to a standardized digital system that provides users (technicians and/or installers) with on-board self-diagnostics and reporting data from your vehicle.
All vehicles build in the United States after 01/01/1996 are OBD-II equipped, which means it will have a diagnostics port (otherwise known as an OBD-II connector).
To find your diagnostics port, simply check the area around your dashboard (the port is typically installed within three feet of the driver).
Don't worry! You do not need any tools to access the OBD-II port.
For more information about on-board diagnostics and if you need to find out if your pre-1996 car is OBD-II compliant, refer to the following website: