What does the air flow meter mass air sensor do?

The air flow meter, or mass air sensor, measures the amount of air entering the engine's intake system. This information is crucial for the engine control unit (ECU) to calculate the appropriate fuel-to-air ratio, ensuring optimal combustion and performance. By providing accurate readings, the sensor helps maintain engine efficiency, reduce emissions, and improve overall fuel economy. Malfunctioning air flow meters can lead to poor engine performance and increased fuel consumption.