Changing the oil is the most common maintenance you'll have to do on your car, but what happens when the check engine light ...

Your check engine light can come on for a lot of different reasons, but there are only a few that occur after putting in gas. Here's what we know.

The check engine light can cause uncertainty for drivers and indicates possible malfunctions. It's an important warning that should be addressed promptly.

What Causes the Check Engine Light to Come On? Every vehicle contains many sensors designed to illuminate the check engine light, signaling something is not safe or not operating properly. Many of ...

Top 10 Check Engine Light Causes Replace catalytic converter (s), $1,348 Replace oxygen sensor (s), $254 Replace ignition coil (s) and spark plug (s), $400 Replace mass air flow sensor, $323 ...

Learn what the P2002 code means, why Powerstroke trucks experience DPF issues, and how to restore power and fuel economy by ...

While your check engine light is obviously meant for engine issues, it can often give you clues to problems in other parts of the car as well.

This 2014 Mercedes-Benz GLK arrived at the shop with a Check Engine light on. The mechanic sent him home with a $3,000 bill ...

CarMD’s latest study looks at the most common check-engine light repairs and their average costs over the previous calendar year, then ranks the results.

A check-engine light could be a gentle reminder or a sign of something catastrophic. We explain what a malfunction indicator light is and what you can do about it.