Seeing your vehicle's check-engine light come on can throw a wrench in your travel plans. It can also feel a little scary: Does it mean your ride is headed for the scrapyard? Or is there a simple fix?

In this video, I compare car OBD2 scan tools at different price points: the Dnose, the Innova 5210, and the ThinkTool Mini. Each tool has unique features, allowing you to choose based on your ...