Is your Mitsubishi have a rough idle, engine stalling, poor starting, and the check engine light is on due to a faulty mass airflow sensor? Learn how to fix the problem by replacing the Mass Airflow Sensor of your Mitsubishi.

Mitsubishi’s Mass Air Flow (MAF) sensor may fail, which triggers the check engine light (service engine soon) to stay on, the engine may start to shake, and fuel consumption will increase. This step-by-step guide provides instructions on replacing a Mitsubishi Mass Air Flow sensor.


Common symptoms of a bad Mitsubishi Mass Air Flow sensor include:

  • Check engine light on
  • Poor starting
  • Engine Surging
  • Engine stalling
  • No-start condition
  • The engine starts then dies
  • Rough idle
  • Service engine soon on (some models)

What you will need

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  1. Park the Mitsubishi on level ground and set the parking brake(s). mitsubishi lancer parked
  2. Pull the hood release under the hood. Prop the hood open.
  3. Locate the Mass Air Flow (MAF) sensor on the intake air duct. mitsubishi mass air flow sensor
  4. Remove the two Torx bolts that hold the sensor in place. On some models, you will need to disconnect the air duct hose as the sensor comes as one unit. mitsubishi maf sensor screw bolt
  5. Press the electrical connector and pull to unplug mass air flow sensor connector disconnected outlander lancer
  6. Install the new MAF sensor and reconnect the electrical connector. You should hear a click when the connector is fully inserted.
  7. Restart the engine. mitsubishi engine started service engine soon light off on
  8. Your engine should run smoothly, but the check engine light will remain on. If preferred, use an OBD-II scanner to reset the Mitsubishi check engine light (service engine soon).

If no other problems are present, your check engine light will reset. This can take up to one week of normal driving. If your Mitsubishi check engine light has not reset within a week, read the codes with an OBD-II scanner.


The YOUCANIC Full System Scanner can read and clear fault codes through every vehicle’s control module.

The Mass Air Flow (MAF) sensor is very important on your Mitsubishi. It measures the temperature and volume of air entering the engine.

While the pictures in this guide are from a 2017 Mitsubishi Lancer, the procedure is almost identical for other models, including Outlander, Galant, Mirage, Eclipse, and Montero. The main difference is that the part number will be different.

We hope you find the Mitsubishi Mass Air Flow Sensor Replacement guide helpful. Check these troubleshooting and repair guides for more help on your Mitsubishi.

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