OBD2 scanners such as this one that’s just $30 at Walmart ($120 off), opened up DIY diagnostics to a whole new generation. Meaning, every driver should have one. Not only can it test your ...

Pros Affordable, repairs minor issues, saves money, simple diagnostics, accurate The TOPDON TopScan Lite OBD2 Scanner packs an incredible amount of functionality into a very small package.

The best OBD-II scanners are a must for any car owner, thanks to their ability to unlock the secrets of your car. It doesn't matter how laid back you are, a mysterious light on your dashboard is ...