Understanding what OBD2 really does OBD2, short for On-Board Diagnostics version 2, is a standardized system in most 1996+ gas vehicles and 1997+ diesels that monitors engine, emissions, and other ...

If you've ever gone to a mechanic for a check engine light problem on your car, then chances are you've heard the technician say something about an OBD scanner. It's a handheld phone-like device that ...