The “check engine” light is the most annoying orange icon in America. Half the time the car feels fine, and the other half ...

Seeing your vehicle's check-engine light come on can throw a wrench in your travel plans. It can also feel a little scary: Does it mean your ride is headed for the scrapyard? Or is there a simple fix?

It is obvious—painfully so, to some—that vehicles have become considerably more dependent on electronics. We are all aware that performance gains on our new cars often aren't as easily obtainable as ...