You're driving down the road, everything seemingly normal. Then, out of the corner of your eye, you see a light come on: the dreaded check-engine light. A lot of people just ignore it; after all, it's ...

How many times have you been to the doctor or hospital for some ailment and the diagnosis was wrong? Getting to the root of most any problem within a complex situation is tough-even for professionals.

Add Yahoo as a preferred source to see more of our stories on Google. Modern cars are technological marvels, and understanding what’s happening under the hood has never been more important—or more ...

A lot of things can go wrong with the cars we drive. Fortunately, modern vehicles are built with onboard diagnostics (OBD) systems, which monitor various parts of the car and detect errors and ...