Can You Clean Mass Air Flow Sensor To Fix Code

DIY Difficulty Level: Beginner to Intermediate, depending on how like shooting fish in a barrel or difficult it is to reach and remove the mass air flow sensor on your particular vehicle.
Fourth dimension Required: five-xc minutes, depending on how like shooting fish in a barrel or difficult information technology is to reach and remove the mass air flow sensor on your detail vehicle.
Tools & Materials:
- Air intake cleaner
- Screwdrivers, wrenches, and any else is needed to admission the mass air menses sensor on your particular vehicle

What Is the Mass Air Period Sensor and What Does It Exercise?

The mass air menstruation sensor (MAF) enables the ECU (the reckoner that runs the engine) to calculate and add together the proper amount of fuel to enable the engine to run at peak power and efficiency. Sometimes this sensor can get chock-full with debris or fail entirely. This gives the ECU inaccurate information and causes an incorrect air and fuel mixture.

If you lot don't feel comfortable cleaning the mass air flow sensor yourself, don't worry! Hither'due south how much it will cost to take a professional replace it.

Where Is the MAF Sensor?

The exact location varies from one vehicle to another, but information technology'due south generally somewhere in your air intake system between the air filter and the intake manifold. Look for a sensor sticking into the middle of the intake tubing, ofttimes virtually the air filter for easy admission.

Meet Footstep 1 below for an image of where the MAF sensor is located.

How Practise You Examination the Mass Air Catamenia Sensor?

Thanks to OBD2, the ECU is constantly checking data from the MAF sensor and other sensors in your engine to make sure everything is working properly.

If your check engine lite is on and you lot doubtable the mass air flow sensor is the crusade, yous tin can exam this with an OBD2 browse tool like the FIXD scanner and app.

Plug your scan tool into your car's OBD2 port, go to View Live Data, and check the MAF sensor readings. Yous should see a number that corresponds to how much air is going into the engine. When the car is warmed upward and idling with the air conditioner off, this should exist a fairly modest number. It should change slightly just stay close to the same value.

Press the gas pedal to rev the engine. The number should increase dramatically, since a lot more than air is suddenly rushing into the engine. You can also hold the engine at sure RPMs to cheque the MAF sensor value there. For example, at ii,000 RPM the value should be higher than at idle, simply lower than at 4,000 RPM.

If what you observe in the live information does not match this behavior, it almost certainly ways your mass air flow sensor is dingy or has failed entirely. There is no way to reset it, but y'all can effort to clean information technology, and so replace it if a cleaning doesn't set up the problem.

Is Information technology Prophylactic to Drive with a Bad Mass Air Flow Sensor?

In the brusk term, you should be fine. If you go along to drive while this trouble gets worse, though, it could cause your engine to misfire. Ignoring a misfire could result in ignition failure, catalytic converter harm, and unsafe or dangerous conditions while operating the vehicle. Cleaning or replacing the mass air flow sensor sooner rather than afterwards volition avoid these potentially more serious and expensive bug.

A mechanic volition typically replace the mass air menstruation sensor regardless of whether it'southward muddied or has failed completely. It's the same corporeality of work either way. If they clean it, put your intake system back together, and it doesn't fix the problem, they take to do the same job all over over again, so it's actually cheaper for a mechanic to supersede the sensor the offset time. That will cost roughly $317 to $330.

If y'all're comfy taking apart your air intake arrangement yourself, it'due south definitely worth trying to clean the mass air menstruation sensor earlier you replace it. All you need is time, maybe a few basic tools (my Ford van required no tools at all), and a $3 can of air intake cleaner.

*These prices are based on national averages. Related repairs or maintenance may also be needed.

When to Clean or Supervene upon the Mass Air Menses Sensor

The MAF sensor is not an item that appears on your maintenance schedule, but similar any sensor, they can occasionally neglect. The best preventive maintenance you lot can practice is to replace your engine air filter ofttimes according to your manufacturer recommended maintenance schedule. That fashion, the air going through your MAF sensor and into your engine volition be free of dirt and debris that can clog information technology or cause it to fail.

*For a custom maintenance schedule based on your brand, model, and mileage, download the free FIXD app.

What Are Common Symptoms Indicating You lot Need to Clean the MAF Sensor?

If yous experience any of these symptoms, it'due south possible a dirty or bad MAF sensor may exist the crusade:

Hesitation (when you press the gas pedal, the machine pauses before accelerating)
Misfires
Loss of power
Check engine light
Codes P0171 and/or P0174

Go along in Mind

Since you will already be taking your air intake system apart, accept a look at your engine air filter whether information technology's time to replace it or not. If it's dirty, replace the air filter now. If you've driven through specially dirty or dusty weather condition, the filter may become muddy earlier than expected.

Now is also a skillful time to make clean your throttle body. It can get muddy the aforementioned fashion as the MAF sensor, and you use the same solvent to clean both, so it should simply have a few minutes while you lot're already in there.

How It's Done

Step 1: Notice your air intake system.

Every vehicle is different, so look online or in your repair transmission to identify your air intake system. My Ford E250's intake is conveniently located straight under the hood. (Yes, information technology's dirty.)

Step 2: Take apart your air intake system and find the MAF sensor.

The intake consists of a series of tubes, usually plastic, simply sometimes metal. Remove your engine air filter, then locate the MAF sensor somewhere between the filter and the engine. In my Ford van, the mass air flow sensor sits correct behind the air filter, and is easy to attain once the filter is removed.

This is also a groovy opportunity to examine your air filter to see if it needs replacement. In my situation, it did.

Pace 3: Clean the MAF sensor.

Beginning the engine. Usually yous don't desire to run the engine without an air filter, but for this job it's ok to do it for a short time. Grab your tin can of intake cleaner (I used CRC Mass Air Catamenia Sensor Cleaner), and spray information technology at the MAF sensor. The engine will slow down and near stall while yous do this. This is normal. A second or so after each spray, the engine should run usually again. Use several brief squirts, rather than one long ane, to make sure the engine keeps animate and running. Spray equally many parts of the sensor equally you can achieve.

Don't worry about spraying this particular liquid into your engine. It's designed specifically for this job. While y'all don't usually want to spray liquid into your engine, this cleaner will burn up harmlessly along with the gas, which is why you want to run the engine while spraying it.

You may go additional OBD2 codes while you practice this. When I cleaned my MAF sensor, I triggered a P2197 code. Normally this means that the engine is getting too much air for the amount of fuel it can provide the engine. Since it happened while I was cleaning the sensor, I knew that wasn't the true crusade, and that it was safe to ignore simply this once.

Step four: Reassemble your air intake organisation.

Now that y'all've cleaned the sensor, you tin can reinstall your air filter and anything else you had to remove to reach it. Now is likewise a good time to install a new air filter if your quondam 1 was dirty, similar mine was. Put everything back together the way you constitute it.

Footstep 5: Use the FIXD scanner and app to clear your engine codes.

To find out if this has solved your problem, clear your codes and keep on driving. If a uncomplicated cleaning has fixed the sensor, your engine should run smoothly and the check engine light should remain off and your problem is solved. Just after doing this task myself, I did an 80-mile trip of mixed city and highway driving. The check engine light did non render.

If the symptoms described above return or remain, information technology's fourth dimension to supersede the MAF sensor. The adept news is that since you but cleaned it, yous already know how to notice your MAF sensor under the hood. You should be able to replace it yourself instead of having a mechanic do information technology for y'all.

Claim Your Custom Maintenance Schedule

Get the FIXD Sensor and complimentary app today for a custom maintenance schedule based on your make, model, and mileage. Never miss important maintenance over again with automated maintenance alerts! Learn more than at fixd.com.

Recovering autocross and rail day enthusiast. One time turned a VW Jetta into a pickup truck. Lives in a van down past the river. Dream car: 2001 Subaru WRC rally car.

Source: https://www.fixdapp.com/blog/how-to-clean-your-mass-air-flow-sensor/

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