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Cleaning the Mass Air Flow Sensor

Model: BMW Serie 5 E39 - Years 1995-2003
Part: Engine

The mass air flow (MAF) sensor, commonly known as the air flow meter, is located along the intake duct, just behind the engine air filter housing. To remove it, simply disconnect the connector, loosen the clamp on the hose, and detach the clips connecting it to the filter housing. Once removed, use a specific cleaning spray for the sensor, spraying it generously to eliminate any dirt residue that could contaminate the sensor and affect its operation and sensitivity. Avoid using contact sprays or other cleaners that could damage the sensor.

Updated on 9 February 2026 by ScegliAuto

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