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Ford P0108 Faulty Code - Manifold Pressure Sensor Replacement

How to diagnose check engine light using an OBD-II Scanner and replace the manifold pressure sensor on a Ford Fusion 2013-2020.

Ford P0108  Faulty Code - Manifold Pressure Sensor Replacement
ESTIMATED TIME 30 - 40 mins
DIY COST $ 30 - 100
DIFFICULTY Easy

A Ford vehicle may trigger fault code P0108 which means Manifold Absolute Pressure/Barometric Pressure High. This code is activated by the ECM when it receives a signal from the MAP/BARO sensor circuit indicating it is operating outside the normal range.

What you will need

Procedure

  1. Unlock the vehicle and go to the driver's seat.
  2. Connect the OBD-II Scanner to the OBD-II port located under the dashboard just above the hood release.

     

  3. Turn the ignition switch to the accessories position.Turning the ignition switch to the accessories position.

     

  4. Go to the Diagnostic Menu on the scanner and select read codes.Going to the Diagnostic Menu on the Scanner.

     

  5. Press enter on the stored codes and the scanner will show P0108 Code - Manifold Absolute Pressure/Barometric Pressure Circuit High.

     

    Checking the stored codes on the scanner.
  6. Open the hood by pulling the hood release under the dashboard. Release the hood at the latch right above the driver's headlight. 

     

  7. Locate the manifold pressure sensor on the lower right side of the intake manifold.

     

    The manifold pressure sensor of the Ford Fusion.
  8. Disconnect the electrical connector of the sensor by pressing the clip and pulling the connector out.Disconnecting the electrical connector of the Manifold Pressure Sensor.

     

  9. Remove the 20mm bolt on the sensor using a 20mm socket wrench.
  10. Pull the manifold pressure sensor out of the vehicle.
  11. Place the new manifold pressure sensor and reinstall the 20mm bolt.
  12. Reconnect the electrical connector of the sensor.
  13. Go back to the driver's seat.
  14. Go to the diagnostic menu again and select erase codes.Selecting Erase Codes on the Diagnostic Menu.

     

  15. Erase the stored codes on the scanner by pressing enter.Erasing the Stored Codes on the Scanner.

     

  16. Start the vehicle and check if the check engine light is still on.

 

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