Massey Ferguson 107.18 – Engine ECU: Air Filter Blocked (ECU)

The engine control system has detected a restriction in the engine's air intake system. The air filter pressure sensor is reading a vacuum/pressure drop that exceeds the allowable threshold, meaning the engine is struggling to pull in enough air, typically due to a clogged air filter.

• 4710
• 7724S
• 5712SL
• Interim Tier 4 (2012-2015)
• 7722
• 7722S
• 7615
• 5613
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7616
• 7618
• 5608
• 4708
• 7619
• 7626
• 7726S
• 7624
• 4707
• 4709
• 5711SL
• 7614
• 7718S
• 5610
• 7620
• 7719
• 7714
• 7716S
• T4 (2015-2021)
• 5612
• 7622
• 7720
• Tier 4 (2015-2021)
• 5611
• 7715S
• 5609
• 7724
• 7617
• 7621
• 7623
• 7625
• 8600 Series

1. 1

   Inspect the primary (outer) and secondary (inner) engine air filters for heavy dust, debris, or blockages

2. 2

   Inspect the air intake pipe leading up to the filter housing for physical obstructions

3. 3

   Check the wiring harness and connector at the air filter pressure sensor (blockage switch) for broken wires, chafing, or oxidation/corrosion on the pins

4. 4

   If filters are completely clean and the code remains active (or if code 107.31 is present), test the sensor by swapping in a known-good air filter pressure sensor

1. 1

   Turn off the machine

   Turn off the machine and ensure the engine is cool.

2. 2

   Locate the engine air filter housing

   Open the hood and locate the engine air filter housing.

3. 3

   Remove the primary air filter

   Remove the filter cover and pull out the primary (outer) air filter.

4. 4

   Remove the secondary air filter

   Remove the secondary (inner) air filter. (Note: OEM guidelines generally recommend replacing the inner filter rather than attempting to blow it out, to prevent engine dusting).

5. 5

   Clean the filter housing

   Clean the inside of the filter housing with a damp cloth to remove residual dirt before installing new filters.

6. 6

   Install new air filters

   Install the new inner and outer air filters, ensuring they seat firmly, and secure the housing cover.

7. 7

   Clear fault codes

   Clear the fault codes via the dash or a diagnostic service tool and run the engine.

8. 8

   Replace the air filter pressure sensor

   If the code persists, locate the air filter pressure sensor (blockage switch) on the intake housing/piping. Disconnect the wiring harness, unthread the faulty sensor, install the replacement sensor, and reconnect the harness.