Understanding the Importance of the Air Fuel Ratio Sensor

The Air Fuel Ratio Sensor plays a critical role in ensuring optimal engine performance and fuel efficiency. Its primary purpose is to monitor the mixture of air and fuel entering the engine, essentially acting as your vehicle's breathalyzer. By providing real-time data to the car's electronic control unit (ECU),it ensures the combustion process runs smoothly, reducing harmful emissions and enhancing fuel economy.

How Does It Function?

The sensor works by detecting the amount of oxygen in the exhaust gases compared to the ambient air. By measuring the difference, it accurately gauges the air to fuel ratio. When this data is relayed to the ECU, adjustments are made to the fuel injection system to maintain the perfect balance, commonly known as the stoichiometric ratio.

Consequences of a Malfunctioning Sensor

Should this sensor fail, the engine's efficiency plummets, potentially leading to increased fuel consumption and elevated emissions. A broken sensor can cause warning lights on your dashboard, indicating the engine is not running at its peak. Over time, this can lead to further engine components being stressed, potentially causing costly repairs.

Compatible Models

• 4Runner
• Land Cruiser Prado