What is mass airflow sensor replacement all about?

In vehicles that run on fuel, the mass airflow sensor controls how much air goes into your engine. For your engine to perform properly, it needs the perfect combination of air and fuel.
If an incorrect fuel to air ratio reaches your engine, the mass airflow sensor likely needs to be replaced. Not only will an incorrect ration impact your engine’s performance, but it will also affect your gas mileage.
Driving with a bad MAF sensor can result in damage to your catalytic converter and eventually ignition failure. Luckily, cleaning your mass airflow sensor can increase its lifespan, and if it fails, it shouldn’t take more than an hour for your mechanic to fix it.

How much does it cost to replace the mass airflow sensor?

An average dealer will charge between $240 to $350 to perform this service, with parts and labor. If your mass airflow sensor is simply clogged with dirt and you’re handy with tools, save some money by purchasing a cleaning kit for under $10.
It’s a good idea to get your mass airflow sensor cleaned whenever you get your car serviced, or at least every six months. Cleaning your car’s air filter often will also ensure that debris isn’t making its way into your MAF sensor.

Do I need to replace my mass airflow sensor?

If you notice that your car pauses before accelerating, misfires, or just isn’t running as smoothly as usual, you might need to replace your mass airflow sensor. Excessive fuel consumption or trouble starting your vehicle are also symptoms of a faulty MAF sensor.
Keep an eye out for your check engine light as well as engine codes P0171, P0174, or P0102, which all point to possible issues with the MAF sensor.
For optimal performance, your car needs a functional mass airflow sensor. Otherwise, your engine will run poorly and you’ll be spending more money on gas than your vehicle requires. If you don’t urgently replace a faulty mass airflow sensor, you may experience expensive mechanical failures and unsafe driving conditions.

How to replace your mass airflow sensor

If you’re comfortable with car maintenance, replacing your mass airflow sensor is a fairly simple process:
  • Step 1: Use slip resistant gloves to disengage the electrical connector from the mass airflow sensor.
  • Step 2: Disconnect the mass air flow sensor. There are many ways this can be secured in your vehicle, but typically you will have to unscrew it or remove the clamps.
  • Step 3: Insert the new mass airflow sensor and secure it to your vehicle, reverse-engineering your previous steps.
  • Step 4: Reconnect the electrical connector to the new mass airflow sensor until it firmly clicks into position.
Keep in mind that the mass airflow sensor element is quite delicate—you may damage it if you touch it. If you’re not sure if your MAF sensor needs to be replaced, check with your local mechanic first—replacing the part is a much more expensive fix than cleaning it.

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