"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The check-engine light suddenly appearing on your dashboard is enough to dampen any drive. For the ...

Vehicle Diagnostics by Delphi is a wireless module that not only tells you where your car has been, but shows its current fuel and battery status. Wayne Cunningham Managing Editor / Roadshow Wayne ...

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?