Understanding the Air Fuel Ratio Sensor ?

The air-fuel ratio sensor is a crucial component in your vehicle's exhaust system. It plays a vital role in ensuring your engine runs efficiently by monitoring the mixture of air and fuel. This sensor continuously provides data to the engine control unit (ECU) to adjust the fuel injection for optimal combustion efficiency.

Why This Sensor Is Needed

Maintaining the right balance between air and fuel is essential for reducing emissions, improving fuel economy, and ensuring engine performance. This sensor allows for precise measurement of the oxygen levels in the exhaust and provides real-time feedback to the ECU, which then makes the necessary adjustments to the fuel injection process.

How It Works

The sensor functions by detecting the amount of oxygen present in the exhaust gases as they exit the engine. This information is critical because the right air-to-fuel ratio leads to more complete combustion, which in turn reduces the production of harmful emissions.

Consequences of a Broken Sensor

When this sensor fails, the ECU may receive incorrect data, leading to poor air-to-fuel mixture adjustments. This can result in increased emissions, a decrease in fuel efficiency, and potential damage to the catalytic converter over time. A malfunctioning sensor typically triggers the check engine light, alerting you to the issue.

Compatible Vehicle Models ?

• Auris
• Auris/Corolla
• Auris/Hybrid
• Avensis
• Corolla
• Corolla (S.Africa)
• Corolla Axio/Fielder
• Corolla Hb
• Corolla Rumion
• Corolla Sed
• Corolla Sed/Wg
• Corolla/Altis
• Corolla/Auris
• Isis
• Ist
• Noah
• Noah/Voxy
• Premio/Allion
• Rav4
• Scion Xd
• Verso
• Wish
• Yaris