Melanie Reiff
Updated on Aug 11, 2022
If you need to replace your mass airflow (MAF) sensor, simply disengage the electrical connector attached to the sensor, remove it, and insert the new MAF sensor in its place. Sometimes the mass airflow sensor gets clogged with dirt or debris, so cleaning it could rectify the incorrect fuel/air mixture.
If your engine isn’t running smoothly or you notice poor gas mileage, you might need a mass airflow sensor replacement. This small, round piece of plastic is essential to your engine’s efficiency and power—a malfunctioning MAF sensor could lead to major issues if not quickly repaired.
Don’t let your faulty mass airflow sensor be cause for concern—car insurance broker and comparison app Jerry is here with everything you need to know to get back on the road safely.
The exact cost varies between different Bmw models. For example, newer vehicle models are usually made with more expensive materials, so recent or high-end models will cost more, especially if your service requires a part replacement. Use the table below to estimate the cost for your own vehicle.

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.

How to find cheap car insurance

Even if your car is well-maintained, you should be prepared for the unexpected. With Jerry, you can be sure that you’re getting the most affordable car insurance without sacrificing coverage.
A licensed broker, Jerry does all the hard work of finding cheap quotes from the top name-brand insurance companies and buying new car insurance. Jerry will even help you cancel your old policy.
Keep in mind that your location is another factor that determines the final cost of repairs. Areas with higher cost of living will usually have more expensive car repair services, especially if there’s less local competition. Check out the table below for an estimate of what Bmw drivers pay in different cities.
Jerry doesn’t just offer fair price repair estimates for Bmw drivers! Our team of writers has collected everything you need to know for every car. Here’s how much the repair costs for some popular cars:
CarTotal Cost EstimateParts CostLabor CostAverage Dealer PriceEstimated Service Duration
Sprinter 3500
Cutlass Cruiser
The cost of repairs might vary depending on which Bmw you drive, but there’s an easy way to save money for the services you need! Just download the Jerry app for help lowering your insurance premiums. In less than 45 seconds, Jerry collects all of your information from your existing insurer. Choose from competitive quotes from top insurance companies and Jerry takes care of the rest—securing your new policy and helping you cancel your old one upon request.
With an average annual savings of $887, Jerry can help you free up funds for the repairs your Bmw’s needs.