How to Use An OBD Scanner 1. Connect The Scanner Your OBD scanner will have a connection cable with a 16-pin trapezoidal plug at the end. This plug goes into your vehicle’s OBD port, also referred to ...

Or, you can just replace your O2 sensor (s) at regular intervals, to try and prevent that minor drop in mpg sometimes caused by a "lazy" high-mileage sensor. Simple Replacement ...

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.