Air-Fuel Ratio Sensor: Essential for Clean and Efficient Driving

Why You Need This Sensor

The air-fuel ratio sensor is a smart component in your vehicle's exhaust system. It helps your engine maintain the perfect mix of air and fuel for better performance, low emissions, and top fuel efficiency. Without it, your car's computer can't adjust the fuel injection properly.

How It Works

This sensor detects how much oxygen is in the exhaust gases. It sends fast, precise data to your car’s engine control unit (ECU). The ECU uses this info to tweak fuel delivery in real-time, keeping your engine running smooth and clean.

What Happens If It's Broken

When the sensor fails, your engine may run too rich or too lean. This can cause poor fuel economy, rough idle, engine hesitation, and increased tailpipe emissions. Ignoring it too long may even damage the catalytic converter.

Compatible Models

• Highlander
• Highlander/Kluger