how to reset check engine light after replacing mass air flow sensor
Replacing the affected sensors is the best solution. Heres a general guide on how to do it.
Answer 1 of 2.
. After the engine cools down you can go to the mass air flow sensor location and remove the connector from the sensors harness. Unplug the electrical connector on the mass air flow sensor. Had it diagnosed as running to lean sensor bad.
Of the thousands of possible codes that can be thrown it is fairly unlikely that the MAF is the cause. When replacing the sensor especially at home most people do not accurately make the replacement causing the check engine light to appear again. Answer 1 of 2.
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Read the codes before attempting repairs. First to cool your cars engine down you need to turn it off. Asked by Visitor in Cedar Park TX on December 06 2018.
You now have to take the MAF out to clean it. One of the most common causes of check engine popping up after MAF sensor replacement is having a faulty replacement. The air is then mixed with the fuel and combustion is the result.
Resetting the Mass Air Flow Sensor by Disconnecting the Battery Remove the old MAF sensor and replace it with a new one Before you connect the sensor with its harness disconnect the battery from the ground cable Leave it like that for around 10 minutes The whole system will be reset now. I replaced my mass air flow sensor on my nissan sentra 2011 sr but the check engine light came back on they told i have to reset the sensor. Then it goes into learn mode and may take a little while before it learns all the parameters of the new MAF sensor.
A replacement mass air flow sensor can cost anywhere from 20 to 600. Keith December 24 2018 640pm 2. This is very important if you have just used the car.
You now have to take the MAF out to clean it. Keeping the battery unhooked for longer than 10 minutes wont hurt. Then vacuum out all dustdirtdebris found inside both halves of the air filter housing.
First locate the MAF sensor. You will also want to make sure the air intake passages are clear and that the air filter is new or clean. Not resetting the cars computer ECU The second and the.
In the service or maintenance options you should have the option to reset the MAF sensor settings. Idling The Engine. Next spray a small amount of contact cleaner into the electrical connector.
Erase the DTC memory. Do not touch the filaments while cleaning it. Up to 8 cash back These codes are a way of helping you or the technician to determine what system s are malfunctioning.
It will be near the intake manifold or throttle body and it will likely have a large electrical connector going to it. 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. If you dont have any contact cleaner on hand using WD-40 or another.
The mass air flow sensor on your nissan d21 pick up has three wires attached to it. A auto shop told me that one of the check-engine codes was. Mass air flowcheck engine light.
If your check engine light is off Your ECU has reset. Check engine light on for mass air flow sensor after already replacing. Tried replacing the spark plugs and the air mass flow sensor but the problem still persists.
Check engine light on for mass air flow sensor after already replacing. 8 Jun 11 2011. If the computer is giving you codes related to the MAF sensor then you will want to check into the electrical wiring for the circuit.
This means that if your mass airflow sensor dies. You dont reset the sensor you reset the ECU that is monitoring the MAF. Stop engine and reconnect mass air flow sensor harness connector.
The most direct way to do it is to use a scan tool to access the ECU via the OBDII interface. The MAF is located along the intake pipe directly after the air filter. Check engine light on for mass air flow sensor after already replacing.
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. Drove car for 10.
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