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

There it is. On your dashboard. Staring at you, mocking you, making you plot insurance fraud: your car’s check engine light. That little bugger has been on your dash for weeks now and you haven’t been ...

Your check engine light can come on a host of reasons, ranging from a loose gas cap to a faulty engine component. If you see a light illuminated on your dashboard, you can use an OBD2 scanner to ...

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 ...