Nissan Mass Air Flow Sensor | Symptoms | Cleaning | Troubleshooting

What are the common problems with Nissan MAF? How can it be diagnosed and replaced, and how can the MAF relearn procedure be performed? This guide will address the Nissan Mass Air Flow (MAF) sensor.

Symptoms

You will notice this list of common symptoms when your MAF sensor fails.

• The check engine light is On
• The engine is hard to start.
• Engine stalls soon after starting
• Engine runs unusually lean or rich, idling.
• Vehicle idles to high or low.
• Engine hesitates when under load.
• The vehicle hesitates and jerks during acceleration.
• High fuel consumption, poor MPG.

How to Diagnose Nissan’s Mass Air Flow.

An OBD2 diagnostic scanner is necessary to retrieve and read the codes stored in Nissan’s engine control unit (ECU) when diagnosing the mass air flow sensor.

1. Search for the DLC port that is placed below the dash on the driver’s side.
2. Plug your diagnostic scanner into this port.
3. Turn on the ignition, but do not start the engine. 
4. Select Read Codes from the main menu.
   

Here are the common trouble codes for Nissan’s MAF sensor that could be set due to a dirty, blocked, or defective sensor. Write down these codes and research them to determine what each code means.

• P0101 – Mass air flow sensor circuit performance
• P0171 – System Too Lean (Bank 1)
• P0174 – System Too Lean (Bank 2)

A faulty Nissan Quest mass airflow sensor could make starting difficult.

How can Nissan’s Mass Air Flow (MAF) sensor be replaced

Changing the MAF on a Nissan vehicle is very quite simple.

What you will need

• Nissan MAF Sensor
• Screwdriver

Procedure

• Open your hood by pulling the hood release under the dashboard.

• Look at the MAF sensor in the engine bay. In Nissan, it is fixed next to the engine air filter housing, which is typically on the driver’s side.

  

• Unplug the connector of the MAF sensor. 
• Watch the following video on how to remove the air filter housing to access the MAF sensor.

Remove the mass airflow sensor in place.

Install the new MAF on your Nissan. Fasten the screw. Plug back the electrical connector until it locks in place.

Cleaning the throttle body and resetting it is recommended after replacing the MAF.
If the engine light is still On in the cluster, use an OBD2 scanner to clear any stored codes in the ECU.

Steps to Clean the Nissan MAF Sensor

Cleaning the MAF sensor on a Nissan takes less than ten minutes.

1.  Pull the hood release and open the hood.
2. Locate the MAF sensor next to the engine air filter housing.
3. Unplug the electrical connector of the MAF sensor.
4. Remove the two screws that hold the MAF sensor secure and remove the MAF sensor.
5. Spray 8 to 12 spurts of MAF sensor cleaner on the exposed plate.
6. Allow the MAF sensor to dry and reinstall.

Voltage

The Nissan mass airflow sensor sends voltage to the ECU. The hot wire sensors typically have an operating range of 0 – 5 volts. At idle, the voltage is under 1 volt. At full throttle, voltage is normally between 4 and 5 volts.

Check Engine Light Still On

After you have replaced the mass airflow sensor, if the check engine light is still on, you can use the YOUCANIC Full System Scanner to clear the stored codes. This can read and clear fault codes on every Nissan control module.

We hope you find the Nissan Mass Air Flow Sensor guide beneficial. For more help with your Nissan, check these troubleshooting and repair guides.

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