In this guide, you will learn about the symptoms of a bad Mass Airflow sensor (MAF) on Mazda vehicles and how to replace it yourself. 

When the mass airflow (MAF) sensor on a Mazda fails, the check engine light will turn on, and you will notice several performance issues.

Symptoms

Here is a list of possible symptoms that you may notice from a bad mass airflow sensor on a Mazda.

  • Check engine light on
  • The engine refuses to start 
  • Engine dies after the start
  • Poor fuel economy
  • Engine idles to high or low

How to replace the mass airflow sensor on a Mazda

mazda maf replacement guide diy 3 5 6 cx5 cx7 cx9

What you will need

Procedure

  1. Let the engine cool down. Next, open the hood of your Mazda.
  2. Locate the mass air flow sensor on your Mazda 5 The sensor is located near the engine air filter housing. diy guide how to change mass air flow sensor Mazda 5 2010 2011 2012 2013 2014 2015 2016 2017 2018

  3. Unplug the wire harness. Next, unplug the electrical connector from your Mazda mass air flow sensor.  location of MAF sennsor on Mazda

  4. Remove the screws that hold the mass air flow sensor in place. 
  5. Install the new MAF on your Mazda. Tight the screws so that they are snug.

  6. Plug the electrical connector until it locks in place. 

  7. Close the hood and start the engine. 

If the check engine light is on, don't expect it to turn off right away. If no other fault codes are present, the check engine light should reset within a week. 

If you want to check for other codes or reset the check engine light immediately use an OBD2 scanner to clear the fault codes. The OBD2 scanner can be connected to the diagnostic port located under the dashboard on the driver's side.  

Mazda Mass Air Flow Fault Codes

Possible fault codes that may be triggered by a bad mass flow sensor on a Mazda.

  • P0101 MAZDA Mass Air Flow Sensor Inconsistent with Throttle
  • P0102 MAZDA Mass Air Flow Circuit Low Input
  • P1100 MAZDA Mass Air Flow Sensor Intermittent
  • P0100 MAZDA Mass Air Flow Sensor Signal Out Of Range
  • P0103 MAZDA Mass Air Flow Sensor High Input Signal
  • P0171 MAZDA Lean Air/Fuel Ratio Bank 1
  • P0172..System too Rich (Bank 1)
  • P0173...Fuel Trim Malfunction (Bank 2)
  • P0174..System too Lean (Bank 2)
  • P0175..System too Rich (Bank 2)

Other DTCs not listed here may be related to the MAF sensor. 

Frequently Asked Questions

 

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Visitor
Member since 2020-07

My check engine light came on. My 2010 madza 3 mass air flow sensor showed to be bad. I had a new one put on and within 3 hours the light came back on. We cleared the computer and again the light came back on. It still showed the air flow censor. Thought maybe I got a bad censor so I replaced it with another new one. Light went off but came back on a few hours later. Still showed the same sensor. Now my car is surging and stalling and even dieing on me. I can't figure it out. Any suggestions?

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Visitor
Member since 2020-07

Great article. I got quoted 280 from the dealership to charge the MAF on Mazda 6. Can t believe I am going to save $200. :)

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Visitor
Member since 2020-07

How to unplug the wire wire harness form the MAF sensor? I can't get it off. Regards

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MercedesMedic
Member since 2017-12

Press hard on the tab then pull.

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