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

Diagnose auto troubles and check and reset warning lights with some of the best OBD-II scanners on the market. Many of these have been tested by the Gear Team.

Did your vehicle's Check Engine light just pop on? An OBD-II scanner can provide some direction. We tested 11 of them to find the best for different situations.

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

Did your vehicle's Check Engine light just pop on? An OBD-II scanner can provide some direction. We tested 11 of them to find the best for different situations.

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.

Did your vehicle's Check Engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle.

Tested: Best OBD-II Scanners for 2023 Did your vehicle's Check Engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle.

The Zurich ZR-PRO scan tool is a professional-level OBD-II scan tool that can read active and pending DTCs and clear the malfunction indicator lamp (MIL).

From affordable diagnostics to tech-ready computers, we rounded up the best OBD-II scanners on the market with the help of our friends at the Gear Team.

What’s an OBD-II (sometimes alternatively referred to as OBD-2, and other times in either form absent the interstitial hyphen) scanner? Answering that question first requires an understanding of what ...