Subaru 22641AA480 Oxygen Sensor ?

The oxygen sensor is a crucial component in the exhaust system of your Subaru. This device plays a vital role in monitoring the air-fuel mixture of your engine to ensure optimal combustion. It provides real-time data to the vehicle's engine control unit (ECU),allowing it to adjust the fuel injection process for maximum efficiency and minimal emissions.

Why is the Oxygen Sensor Needed?

The primary purpose of the oxygen sensor is to maintain an ideal balance between air and fuel, ensuring the engine runs smoothly while reducing harmful emissions. This helps in preserving the environment and maintaining the vehicle's fuel economy. Without a properly functioning sensor, your car's performance can suffer significantly, leading to a drop in fuel efficiency and a potential increase in pollutants emitted by the vehicle.

How Does It Work?

Positioned in the exhaust manifold, this sensor measures the oxygen levels in the exhaust gases. It sends this information to the ECU, which then makes necessary adjustments to the air-fuel ratio. This closed-loop system constantly optimizes the combustion process, ensuring the engine operates efficiently under varying conditions.

Consequences of a Faulty Oxygen Sensor

If the oxygen sensor malfunctions, your engine may receive inaccurate data, causing either a rich or lean fuel mixture. This can lead to issues such as rough idling, decreased acceleration, and increased exhaust emissions. Moreover, a faulty sensor can trigger the Check Engine Light, indicating a potential problem that requires prompt attention to avoid costly repairs.

Compatible Subaru Models:

• Legacy
• Impreza
• Forester
• Exiga