22690AA970 Subaru SEN ASSY-OXYGEN, Price: 127.96$, Weight: 0.2kg

Oxygen Sensor: Optimizing Your Engine's Performance

An essential component of the vehicle's emissions control system, the oxygen sensor plays a pivotal role in maintaining efficient engine performance. It measures the amount of oxygen in the exhaust gases, allowing the engine control unit (ECU) to adjust the air-fuel mixture for optimal combustion.

Why is this Part Needed

The oxygen sensor ensures the engine runs efficiently and cleanly. By providing real-time feedback to the ECU, it helps in reducing harmful emissions and improves fuel economy. Its presence is crucial for meeting emission standards and maintaining the engine's health over time.

How Does it Work

The sensor is strategically placed in the exhaust system where it continuously monitors the levels of oxygen in the exhaust stream. It generates a voltage signal that corresponds to the amount of oxygen present, enabling the ECU to maintain a nearly perfect air-fuel ratio, promoting optimal engine performance and reduced emissions.

What If This Part Is Broken

A malfunctioning oxygen sensor can lead to a rich or lean air-fuel mixture, resulting in poor fuel efficiency, increased emissions, and potential damage to vital engine components. Over time, a failing sensor can trigger the check engine light, warning you of an exhaust system issue requiring immediate attention.

Compatible Car Models

• Legacy
• Impreza
• Forester