SEN ASSY-OXYGEN

Oxygen Sensor Overview

The oxygen sensor, often referred to as an O2 sensor, plays a pivotal role in the engine's emission system. It measures the proportion of oxygen in the vehicle's exhaust gases. This data is essential for maintaining an optimal air-fuel ratio, ensuring your engine runs efficiently.

Importance of the Oxygen Sensor

An efficient oxygen sensor contributes to reduced emissions and optimized fuel economy. This component informs the car's computer (ECU) whether the fuel mix is running rich or lean, enabling the ECU to adjust the amount of fuel entering the engine accordingly. A properly functioning sensor aids in maintaining peak engine performance and longevity.

Signs of a Faulty Sensor

When an oxygen sensor begins to fail, it can lead to a range of issues:

• Decreased fuel economy
• Increased emissions, which could lead to a failed emissions test
• Poor engine performance, including surging or hesitating
• Illuminated check engine light on the dashboard

Ignoring a faulty oxygen sensor can result in significant damage to the catalytic converter, leading to costly repairs.

Installation and Maintenance

Replacing an oxygen sensor requires technical knowledge and precision. It's advised to consult with a professional when dealing with engine components. Regular inspections and timely replacements ensure the vehicle's emission system remains in top condition.

Compatibility List

Compatible with the following Subaru models:

• Legacy
• Impreza
• Forester
• Exiga