Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

"At some point," said Maurice Tuff, "your check-engine light will come on. Every vehicle that I've owned, the check-engine light has come on." And for Tuff, that dreaded light has shined not only in ...

When the dreaded malfunction indicator light turns on, it’s not the end of the world. Here’s how to cope with an MIL!

I’m going to start with a disclaimer: I am not mechanically inclined. I’ve tried to get hands-on with our cars in the past, but it’s seldom gone well. My latest bugaboo has been the check engine light ...

Smart Engine Diagnostics Tools Change the Game of Equipment Service Fortunately for fleet owners, engine manufacturers have been working hard to make the process of taking care of their products ...

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 ...

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 — ...

Whether you know a lot about cars or nothing about them, it's never fun to see the check-engine light—also known as a malfunction indicator light (MIL). This is your car trying to tell you it has ...

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 ...