With the Check Engine Light on the dashboard, the code scanner becomes your best friend. Your OBD-II scanner might reveal the P0141 code, but what does this mean? In this guide, we take a closer look ...

The Check Engine Light has come on and you found a P0135 code with your compatible scanner. What’s next? After figuring out what this DTC means, you are ready to fix it. In this guide, we cover the ...

With fuel prices rising, the need for accurate air/fuel mixture monitoring is more important than ever. The engine computer needs to know what the fuel mixture is with a high degree of precision so it ...

Q:Hi James. I keep having an oxygen sensor fault code for a lean exhaust with my '97 Corvette. I've taken the vehicle to the dealer several times but the problem keeps recurring. I would like to try ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...