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 ...

Neither black tape nor a magic marker is the solution when your car or truck's check-engine light comes on. When the light, which is shaped like the outline of an engine, illuminates, do not panic!

When your vehicle's check engine light (CEL) comes on, it's often a sign that something needs attention. But with over 20,000 ...

Ignoring a check engine light might feel harmless if the car still runs smoothly, but the warning signals more than a minor inconvenience. Driving with that light on can lead to higher repair costs, ...

While your car can’t talk, it communicates with you using chimes, icons, and messages. One icon that you should never ignore is the check engine light. It turns on when the car’s onboard computer ...