An oxygen sensor, often referred to as an O2 sensor, is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas of an internal combustion engine. It is a key component of the engine management system and plays a crucial role in optimizing engine performance, fuel efficiency, and reducing emissions.
Over time, O2 sensors can become contaminated with carbon deposits, oil, and other combustion byproducts, which can affect their accuracy and lead to engine problems. Cleaning an O2 sensor can restore its functionality and improve engine performance.