Air-Fuel Ratio Sensor for Optimum Engine Performance

Why Is This Sensor Needed

This advanced sensor is crucial for modern engines, measuring the precise amount of oxygen in exhaust gases. It helps the vehicle's computer (ECU) adjust the air-fuel mix for top fuel efficiency, lower emissions, and consistent power.

How Does the Sensor Work

Mounted in the exhaust system, it constantly samples gas flow and sends real-time voltage signals to the ECU. These signals guide the ECU to add or reduce fuel, keeping the ratio ideal under all driving conditions. This smart adjustment is essential for meeting emission standards and preventing engine issues.

What Happens If This Part Goes Bad

If this sensor fails, symptoms include rough idling, poor acceleration, high fuel consumption, and check engine warnings. Ignoring the issue can harm the catalytic converter or cause the vehicle to fail emission tests. Replacement ensures your car remains efficient and legal to drive.

Compatibility

• Impreza
• Xv