Massey Ferguson E 94 (31) – Engine Electronic Module (EEM / Engine ECU): Fuel filter pressure sensor - Oil filter pressure LOW (with old sensor) / Fuel main filter inlet pressure LOW

The engine control system has detected that the fuel pressure has dropped below the normal operating threshold, which typically indicates a restriction in fuel delivery (such as clogged fuel filters, blocked lines, or air in the system) or a failure of the fuel filter pressure sensor itself.

• 5465
• 5475
• 6465
• 6475
• 6480
• 6485
• 6490
• 6495
• 6497
• 6499
• 6612
• 6613
• 6614
• 6615
• 6616
• 7465
• 7475
• 7480
• 7485
• 7490
• 7495
• 7497
• 7499
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 8650
• 8660
• 8670
• 8680
• 8690
• 9695
• 9795

1. 1

   Verify fuel level and quality to ensure the tractor is not out of fuel or drawing air into the system.

2. 2

   Visually inspect fuel lines from the tank to the filters for pinched hoses, kinks, cracked hoses, or loose fittings causing air leaks.

3. 3

   Check the water/fuel separator bowl for excess water or heavy sediment accumulation.

4. 4

   Inspect the fuel filter pressure sensor and its wiring harness for physical damage, corrosion, or loose connections that could cause a false low-pressure reading.

1. 1

   Clean the Area

   Ensure the area around the fuel filter housing is clean to prevent dirt from entering the fuel system.

2. 2

   Drain the Separator

   Drain any water from the primary fuel filter/water separator bowl.

3. 3

   Clear Fuel Lines

   If a blockage is suspected in the supply line, disconnect the line from the filter housing and use compressed air to blow the line clear back toward the fuel tank.

4. 4

   Replace Fuel Filters

   Remove and replace all fuel filters (both the primary water separator and the secondary main fuel filter).

5. 5

   Bleed the Fuel System

   Prime and bleed the fuel system to ensure all trapped air is removed from the lines and filters.

6. 6

   Test the Machine

   Start the engine and put it under load to see if the E 94 (31) code clears and the red warning light stops flashing.

7. 7

   Replace the Sensor

   If the filters and lines are clear, fuel delivery is confirmed, and the code persists, replace the fuel filter pressure sensor.