If you have a basic OBD2 scanner, you may only see a code, such as P0171 or P0456, and nothing else on the display. In this case, you will need to do some research to find out what the code means.

Just link the code reader to the vehicle's 16-pin DLC using the supplied adapter cable and wait. Remember, all of the link ports are the same here, so there's only one cable, one connection.

An OBD2 scanner that can read your vehicle’s trouble codes is a critical tool for DIYers. But even if you don’t like turning wrenches yourself, it’s hugely helpful to be able to get an idea of what’s ...