When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or emissions system needs attention. I see it as an early warning system that ...

When the check engine light comes on in a vehicle, it’s indicating that there is some issue with the car that should be checked out. It could be something minor, such as the gas cap not being screwed ...

Does a check-engine light really mean something is wrong with your engine? An OBD2 scanner can tell you. What you should do ...

Ignoring a check engine light can turn a minor problem into a major expense, according to a new report by CarMD.

This automotive tutorial demonstrates a comprehensive ignition system upgrade and check engine light fix on a performance hatchback. The process involves replacing a faulty emissions purge valve ...

When your vehicle's check engine light (CEL) comes on, it's often a sign that something needs attention. But with over 20,000 parts working together in your car — many important for normal operation — ...

Onboard diagnostics (OBD) systems have been around since the 1980s and were developed to help limit harmful automotive exhaust emissions. Between 1988 and 1995, U.S.-built vehicles came with what's ...

When it comes to the cost of getting a check engine light fixed, it doesn't always just depend on the issue itself, but where you live. So which states can you expect to pay the highest and lowest in ...