Audi A 3 Maf Sensor Location. The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. It is located in the front left of the car under a plastic cover.
A MAF sensor measures the density of the air entering the intake manifold.
In the end, I removed the sensor itself from the round "housing" & dunked it in Varsol for a few minutes, then sprayed some starting fluid (Ether) into it a I'd allocate my $$$ to a fresh MAF sensor and forget the tomfoolery. with the newer style MAFS.
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Mass air flow (MAF) sensor/volume air When the engine is running, air passes through the MAF, which sends a voltage signal to the engine controller. The mass air flow sensor (MAF) is used to measure the amount and temperature of air that is entering the engine at any one time. The tricky thing with some of these types of faults is that you can have a mass air flow sensor concern without triggering the check engine light.
