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 ...

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

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

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.

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

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 ...

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.

You Can Find Out What Your ‘Check Engine’ Light Means for Free Sure, you could take it to a mechanic—but there's a quicker way, and it's free.

Engine sludge can be detrimental to your vehicle's performance. Here's the most common causes, the warning signs to watch for, and how to get rid of it.

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.