That 16-pin connector tucked beneath the dashboard of every car built after 1996 is one of the most underused tools available to everyday drivers. Most people encounter the OBD-II port only when a ...

For all its '81 vehicles, GM introduced a computer-controlled engine-management system named Computer Command Control. It became known as CCC or C-3. The engine controller—first called an engine ...

Before I figured out how to work on cars, onboard computer systems scared me. I’ve had no formal training, after all, so the idea of a car’s complex electricals and countless sensors made DIY work ...