Mass Air Flow Sensor Service

Step by step guide on how to service an automotive mass air flow sensor, this article pertains to most MAF equipped cars.

Difficulty Scale: 2 of 10

Begin with the car on level ground, in park with the emergency brake set.

Step 1 - Locate the mass air flow sensor located in the air intake portion of the air filter or intake tube.

Mass Air Flow Sensor

Step 2 - Once the sensor has been located, release the wiring connector to the sensor.

Removing Mass Air Flow Sensor Electrical Connector

Step 3 - After the electrical connector has been removed, loosen and remove the sensor mounting screws.

Removing Sensor Mounting Screws

Step 4 - Next, carefully lift the sensor from the housing while taking note of the sensors orientation.

Mass Air Flow Sensor Removed

Step 5 - After the removal of the sensor, use sensor safe carb cleaner to clean the contaminated sensor element.

Sensor Safe Carb Cleaner


Written by
Co-Founder and CEO of
35 years in the automotive repair field, ASE Master Technician, Advanced Electrical and Mechanical Theory.


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Article first published (Updated 2014-07-22)