• Monitors air levels within your engine
• Plays a vital role in your electronic fuel injection system
• Replacement can be complex

The Mass Air Flow Sensor on your vehicle is an important component of the electronic fuel injection system. The Mass Air Flow Sensor is positioned between the air filter and intake manifold on the engine and evaluates the amount of air that passes through the air filter and into the engine. Your INFINITI's onboard computer takes in the information that the Mass Air Flow Sensor gathers and determines how much fuel is required to keep the right ratio of air to fuel.

If the Mass Air Flow Sensor is worn out or damaged, it can cause the engine to run rich or lean, meaning there is too much air or not enough fuel in the air-to-fuel ratio. If your INFINITI's engine is running lean, you might notice symptoms such as backfires when decelerating, decreased performance, or your INFINITI won't start.

Since engine performance can be affected by an old Mass Air Flow Sensor, it may trigger your INFINITI's check engine light. Using an OBD-II scanner, connect to your INFINITI's computer and check the codes to see if the scanner returns a Mass Air Flow Sensor error code. Don't own a scanner? Head to your closest INFINITI service center for assistance.

Replacing an old or worn out Mass Air Flow Sensor is difficult and should be left to a professional. If you receive a professional inspection for air flow sensor issues, your technician might be able to solve them by simply cleaning the sensor instead of replacing it. They'll use a specialized mass air flow sensor cleaner to remove any dirt, debris, or grime that's built up on the sensor.

If you need to replace your old Mass Air Flow Sensor, ensure you get the right part with a genuine Mass Air Flow Sensor from INFINITI Parts. This Mass Air Flow Sensor 226801MB0A fits your INFINITI M37 2011-2019, INFINITI M56 2011-2019, or INFINITI Q70 2011-2019. Check out the What This Fits tab for more details.

Fits M37, M56, M70, Q70