On-board diagnostics (OBD) means different things to different people. To the guy who still cranks over his '71 'Cuda every morning to get to the plant, it scares him to death. But then again, he's ...

3D Insider is ad supported and earns money from clicks, commissions from sales, and other ways. This guide reviews 8 of the best OBD2 scanner choices for DIY and professional mechanics. Some are ...