The Oxygen (O2) sensor is arguably the most critical electronic component for your engine’s efficiency. Often referred to as the "nose" of the engine, it continuously monitors the amount of unburned ...

We earn commissions from purchases you make using links in our articles. Learn more. If your car experiences poor fuel economy, lacks power, feels sluggish, idles rough, or has an illuminated check ...

The Oxygen Sensor (O2 sensor) is the "nose" of your engine’s computer. Positioned in your exhaust system, it constantly "smells" the exhaust gases to determine if the engine is burning fuel ...