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

Learn what that pesky dashboard light means before heading to the shop — and maybe save some cash in the process.

This includes a requirement that all vehicles sold within their territories must support an on-board diagnostic system that can be operated to determine the serviceability of the vehicle's emission ...

A car diagnostic scanner — aka an on-board diagnostics scanner or an OBD2 code reader — is a device that communicates with your vehicle's computer system to retrieve information about its performance ...

The check engine light (CEL) comes on when the on-board diagnostics second generation system (OBD II) detects an emission system problem. And yes, you can legally turn off the CEL yourself. But is ...

Automotive diagnostics have come a long way since the “idiot lights” of the 1980s. The current version of the on-board diagnostics (OBD) protocol provides real time data as well as fault ...

In short, effective vehicle diagnosis combines mechanical knowledge, specialized tools, and a systematic approach to ...