Subaru Oxygen Sensor

The oxygen sensor is a crucial component in modern vehicles, acting as the communications hub between your car's exhaust system and its engine management computer. This indispensable part ensures your engine runs efficiently, maintaining the perfect balance of air and fuel necessary for optimal combustion. Without it, your vehicle could run too rich or too lean, leading to reduced fuel economy, increased emissions, and potential damage to the catalytic converter.

Why You Need This Sensor

The sensor monitors oxygen levels in the exhaust gases, sending data to the Electronic Control Unit (ECU). The ECU uses this information to adjust the air-fuel mixture for efficient combustion, improving engine performance, fuel efficiency, and reducing harmful emissions.

Functionality

Installed in the exhaust manifold, the oxygen sensor continuously measures the amount of oxygen in the exhaust gases. It transmits voltage signals to the ECU, which then fine-tunes the fuel injection system accordingly. This process ensures that your car operates smoothly and efficiently.

Consequences of a Malfunctioning Sensor

• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions leading to failed emissions tests
• Possible damage to the catalytic converter
• Reduced engine performance with potential rough idling

Models Compatibility

This oxygen sensor is known to fit several Subaru models seamlessly, ensuring a smooth functionality:

• Legacy
• Impreza
• XV
• Forester
• Exiga