Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find ...

Best OBD-II Scanners of 2025, Tested Get the read on your car issues with an OBD-II code reader. I tried out some of the top brands on the market to find the best one for your needs.

Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.