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 ...

That's where OBD-II scanners come in, giving enthusiasts and everyday drivers a window into their vehicle's diagnostic systems. If you're chasing down the cause of a check-engine light, ensuring peak ...

Your check engine light can come on a host of reasons, ranging from a loose gas cap to a faulty engine component. If you see a light illuminated on your dashboard, you can use an OBD2 scanner to ...

Everyone knows how imperative it is to service their vehicles to make sure they’re running smoothly and efficiently. But even if someone is following the manufacturer-suggested service intervals and ...

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.

We earn commissions from purchases you make using links in our articles. Learn more. If you think about the friends you have in your life, one of the things that makes that friendship work is ...

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 ...

There it is. On your dashboard. Staring at you, mocking you, making you plot insurance fraud: your car’s check engine light. That little bugger has been on your dash for weeks now and you haven’t been ...