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 ...

The Check Engine light may indicate a serious issue with your Cummins diesel engine. Here's how to check and clear the fault codes triggering that light.

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 ...

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 ...

The check engine light means one of your car’s systems is malfunctioning. If it’s flashing, pull over as soon as you safely can. If it’s steady, follow these simple steps. Many, or all, of the ...

In the Last diagnostics article, we outlined how to retrieve and decipher engine diagnostics for engines running OBD-I engine management computers. OBD or On Board Diagnostics is a subsystem of the ...

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 ...

An OBD-II scan tool is an incredibly useful automotive diagnostic device, but it's not magic. Here's what it can and can't do.

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 ...