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

Put your multimeter in Volts DC mode V and connect one probe of the multimeter to a good ground point on your car like the metal frame or engine block if you cant find any suitable metal parts use a plastic cover for instance. Mass air flowcheck engine light.

G35 350z How To Clean Maf Mass Air Flow Sensor Ecu Throttle Idle Relearn Youtube

Erase the DTC memory.

. Wait five minutes and reinsert the fuse. Then check the Throttle. How to Reset the Mass Air Flow Sensor.

Check engine light on for mass air flow sensor after already replacing. If the Check Engine Light was out after you did the repair and came back on later after starting the car or driving than another problem may have popped up. However recent cars employ a hot-wire.

Reconnect the electrical connector into the MAF sensor. Do not touch the filaments while cleaning it. Of the thousands of possible codes that can be thrown it is fairly unlikely that the MAF is the cause.

Then it goes into learn mode and may take a little while before it learns all the parameters of the new MAF sensor. Now that you know when to reset the mass air flow sensor lets show how you can do it. Before replacing the mass air flow sensor try replacing the air filter and cleaning the air flow sensor.

The MAF is located along the intake pipe directly after the air filter. If your check engine light is off Your ECU has reset. Check the MAF Sensor is Receiving Voltage.

As mentioned before therere two ways you can do it. Asked by Visitor in Cedar Park TX on December 06 2018. Make sure no other codes were present that may have came back.

Connect the second probe of the multimeter to the black wire of the Mass Airflow Sensor. How Do You Reset Check Engine Light After Replacing Maf Sensor. Turn the ignition on but do not start the engine.

Read the codes before attempting repairs. Remove the connector with the harness of the sensor. Resetting the Mass Air Flow Sensor by Idling the Engine.

Check engine light on for mass air flow sensor after already replacing. A replacement mass air flow sensor can cost anywhere from 20 to 600. Resetting the cars computer and ensuring all codes from the sensor are synched with the computer.

The mass airflow sensor is a key sensor in your car. Had it diagnosed as running to lean sensor bad. A auto shop told me that one of the check-engine codes was.

Check Engine Light appearing on the dashboard. The mass air flow sensor MAF monitors the amount of air entering the engine and the flow of air through the engine. Replacing the affected sensors is the best solution.

Pull out the air. 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. Drove car for 10.

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. The codes are an essential tool in helping a technician detect a problem with the MAF sensor. The mass air flow sensor on your nissan d21 pick up has three wires attached to it.

You now have to take the MAF out to clean it. An intake air temperature sensor also known as an IAT sensor is integrated into the mass airflow sensor in current automobiles. Disconnect the electrical connector from the MAF sensor.

Turn off the engine and let it cool down if youve been driving. Answer 1 of 2. 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.

Then vacuum out all dustdirtdebris found inside both halves of the air filter housing. 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. There are just a few different types of airflow sensors.

Turn ignition switch OFF. Check the codes yourself. Hence when some codes are not in sync with the vehicles computer you will have the check engine light showing up again.

Then it goes into learn mode and may take a little while before it learns all the parameters of the new MAF sensor. Stop engine and reconnect mass air flow sensor harness connector. Raise the vehicles hood and prop it open.

Have an assistant start the engine and allow it to idle. Autozone and other places will plug in to your OBDII port for free or you can buy a code scanner yourself. 8 Jun 11 2011.

Tried replacing the spark plugs and the air mass flow sensor but the problem still persists.

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