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 ...

That little yellow check-engine light is sneaky. Most of the time, you forget it could be there. But when it detects an issue, it illuminates menacingly. For many, the initial reaction might be to ...

Then plug in a diagnostic tool to your OBD2 port and find out what’s wrong—or at least narrow down the possibilities. If you’re not sure which OBD2 code reader to buy, we've found the perfect one for ...

Modern cars are basically computers on wheels. With so many electrical systems, sensors, and motors, there’s so much that could potentially go wrong. When something does go awry, pinpointing the ...

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 ...

“It’s nice knowing what’s wrong with the car before you bring it in for service.” Men’s Journal aims to feature only the best products and services. If you buy something via one of our links, we may ...