Add Yahoo as a preferred source to see more of our stories on Google. What do you do when the "Check Engine" light comes on in your car? A lot of people just ignore it; after all, that sensor is ...

Almost all cars made after 1996 have an OBD2 diagnostic port for plugging into and reading trouble codes when a “check engine” light comes on. But some vehicles, particularly German ones made after ...

Car diagnostic tests scan a car’s components and integrated systems for errors or malfunctions before they become dangerous. These tests leverage computerization to keep your car in optimal working ...

Have you ever looked under your car's steering wheel at all the wires, fuses, and plugs? If so, you might find an odd plug called an OBD-II port. That's the same port any technician uses during a smog ...