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 ...

I was recently at a seminar going over some diagnostics for some of the problematic and reoccurring fault codes. The general discussion led us in an interesting direction about the nature of fault ...

This article was updated in November 2025 with new information. You know you’ve earned your DIY stripes when you can stay calm the moment something goes wrong. And with cars, that moment usually ...

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 ...