With the Check Engine Light on, you know your vehicle needs some diagnostic work and repairs. If your professional scanner picks up the P2271 code, you know to look at the oxygen sensor, but how can ...

It is a moral dilemma that many shops encounter on a regular basis. It starts when a good customer comes in with the check engine light ablaze. Running your usual diagnostics, you encounter a ...

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 ...

Understanding how oxygen sensors work will help you diagnose problems without having to rely completely on a repair shop. Oxygen sensors act as low-voltage producers, such as how a microphone uses ...

The P0137 code shows that there’s a problem with one of the oxygen sensors in your vehicle. It’s a generic OBDII code that can be read with a diagnostic scanner. In this guide, I evaluate what the ...

Unscrewing a sensor and replacing it is pretty straightforward. You might need this special socket to clear the wires. Twelve years and more than 100,000 miles have passed under your trusty commuter ...