how to reset check engine light after replacing mass air flow sensor

Replacing the affected sensors is the best solution. Check if the engine light is still on after the Mass Air Flow Sensor was replaced.

How To Clear Check Engine Mass Air Flow Sensor Light Mcnally Institute

Restart engine and let it idle for at least 5 seconds.

. Switching the ignition on and off is also one method of hard reset without disconnecting batteries. Can someone please help. Disconnect mass air flow sensor harness connector.

I have a 2015 Nissan Sentra SR and a while back the check engine light came on and read code P0101 for mass air flow sensor. The Check Engine light will blink then shut off. Remove the two screws that hold the MAF sensor secure and remove the MAF sensor.

Only show this user. Start engine and warm it up to normal operating temperature. If your check engine light is off Your ECU has reset.

Put the keys in your ignition and turn your ignition on and off consecutively after a second in each step. This will indicate that your ECU has been reset. Answer 1 of 2.

A replacement mass air flow sensor can cost anywhere from 20 to 600. The entire system can be reset by unhooking the battery and leaving it unhooked for 10 minutes. Once it is done see if the engine check light is still coming on or not.

Tried replacing the spark plugs and the air mass flow sensor but the problem still persists. If check engine light code P0172 persists after you have inspected the air intake system and cleaned the Mass Air Flow MAF Sensor perform a fuel pressure test. This is very important if you have just used the car.

Hence when some codes are not in sync with the vehicles computer you will have the check engine light showing up again. Switching the ignition on and off is also one method of hard reset without disconnecting batteries. However the check engine light just came back on again and is reading the same code for the mass air flow sensor.

I bought a 2004 X3 recently and even though the Check Engine light was not on I did buy a can of Mass Air Flow sensor cleaner and cleaned the MAF. I went and replaced the sensor and then cleared the code. Turning the Ignition On and Off.

When you change a MAF sensor you need to disconnect the battery for about 10 minutes so the computer forgets the learned parameters and resets to the factory parameters. Turn the ignition to the On position but dont crank the engine it wont start anyway. Then vacuum out all dustdirtdebris found inside both halves of the air filter housing.

This is because the ECU will detect an out of range value coming from the MAF sensor and the check engine light is its way of letting you know that something is wrong. How Do You Reset Check Engine Light After Replacing Maf Sensor. Wait five minutes and reinsert the fuse.

Resetting the cars computer and ensuring all codes from the sensor are synched with the computer. First to cool your cars engine down you need to turn it off. When you change a MAF sensor you need to disconnect the battery for about 10 minutes so the computer forgets the learned parameters and resets to the factory parameters.

Turn ignition switch OFF. After the engine cools down you can go to the mass air flow sensor location and remove the connector from the sensors. Stop engine and reconnect mass air flow sensor harness connector.

Then it goes into learn mode and may take a little while before it learns all the parameters of the new MAF sensor. Key on engine off it should be approximately 45 volts idling in the 1 volt range and go over 4 volts at a snap throttle. The engine still drove like it was a bit breathless so I bit the bullet and bought a brand new MAF sensor.

Check Engine Light appearing on the dashboard. Check engine light on for mass air flow sensor after already replacing. The codes are an essential tool in helping a technician detect a problem with the MAF sensor.

The mass airflow sensor is a key sensor in your car. A bad mass air flow sensor will usually trigger a check engine light. The transformation was remarkable - the engine seemed to pull with.

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