John Paul, AAA Northeast's Car Doctor, hears from a reader deciding between a vehicle code reader and a scan tool. The post ...

Cars are more than just oil and steel. Modern models have incorporated electronics and computer chips to help manage and optimize their mechanical components. That means maintaining your car's ...

Part of the frustration of a check engine light is that it’s just so vague. It can signal anything from a looming powertrain failure to something as benign as a loose gas cap. The light will simply ...

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 ...

If you've ever seen a port by your car's dashboard that can't charge your phone or provide auxiliary power from your vehicle's battery, there's a good chance that it is an OBD (On-Board Diagnostics) ...

Car diagnostic tests scan a car’s components and integrated systems for errors or malfunctions before they become dangerous. These tests leverage computerization to keep your car in optimal working ...