If the vacuum hoses are leaking, it will give the same error code as mass airflow sensor failure. It is common for the mass airflow sensor to get dirty (if the air filter is dirty) and lose the ability to read the amount of air coming in the engine. If the sensor goes bad, the engine will not know the right amount of fuel to add, causing problems including poor gas mileage, lack of power and more. The computer in the car reads the amount of air coming into the engine from the mass airflow sensor and then calculates the correct amount of fuel needed for proper engine performance.

For an engine to perform properly, it needs a specific amount of air-fuel mixture. The mass airflow sensor measures the amount of air entering the engine. All cars take air from the outside and pass it into the engine through the air filter. The mass airflow sensor is a round tunnel made of plastic with a sensor attached inside. What is the Mass Airflow Sensor all about? Service type Mass Airflow Sensor Replacement

Saturn mass air flow sensor problems