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 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 — ...

You’re driving along in your car or truck and suddenly a yellow light illuminates on your dash telling you to check or service your engine. If you’re like most car owners, you have little idea about ...

A check engine light that returns after being reset means the underlying fault has not been repaired, only cleared from the vehicle’s diagnostic memory. The OBD-II system monitors engine and emissions ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Your Check Engine light is shining like a beacon of bad news. What's going on? The ...

Fact: Check engine lights lead to gray hairs and sleepless nights. Just kidding, they’re important warning signs that help you maintain your ride’s health and well-being. But what happens when that ...

I have a 99 Mustang. About a year or so ago, my check engine light (hereby known as the CEL) went on. I took it to my local shop, who charged my $75 and said they fixed it. 2 days later, it comes back ...

Americans are holding onto their vehicles longer than ever, with the average age of a car in 2020 rising to a record 12.1 years, according to data from IHS Markit. But if you own a car for long enough ...

There are few things more distracting when driving than a check engine light, or CEL. The CEL is a vague, catch-all light that indicates there is an error somewhere ...