Massey Ferguson 00.2.31 – Dash: Issue With Signal Voltage From Fuel Level Sensor Voltage

The control module is receiving an out-of-range, implausible, or entirely missing electrical voltage signal from the fuel tank's level sending unit. This typically results in a malfunctioning fuel gauge (e.g., stuck on empty, bouncing, or reading full constantly).

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 300
• 4000
• 4707
• 4708
• 4709
• 4710
• 5400
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5708R
• 5709
• 5709S
• 5710S
• 5711
• 5711S
• 5712S
• 5713S
• 6465
• 6475
• 6480
• 6612
• 6613
• 6614
• 6615
• 6616
• 6712
• 6713
• 6714
• 6715
• 6716
• 6718
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7716
• 7718
• 7719
• 7720
• 7722
• 7724
• 7726

1. 1

   Inspect the wiring harness and connector at the fuel level sensor (located on the fuel tank) for rub points, corrosion, open circuits, or rodent damage.

2. 2

   Verify the ground integrity of the sending unit, as a lost ground will cause the gauge to fail and log a voltage error.

3. 3

   Perform a gauge sweep test: Disconnect the signal wire from the sending unit. With the ignition ON, the dash gauge should drop to one extreme (e.g., empty). Next, ground the signal wire directly to the chassis; the gauge should sweep to the opposite extreme (e.g., full). If the gauge responds correctly, the wiring harness and Dash module are functioning properly, confirming the sensor itself is faulty.

4. 4

   Perform a resistance (Ohms) test: Remove the sensor and use a multimeter to measure the resistance across its terminals. Slowly move the float arm up and down. If the resistance does not change smoothly, jumps erratically, or shows an open circuit, the sensor is internally damaged and must be replaced.

1. 1

   Prep the Tank

   Drain the fuel tank below the level of the sensor to prevent spills during removal.

2. 2

   Clean the Area

   Thoroughly clean the area around the sensor mounting plate on the top of the fuel tank to prevent dirt and debris from falling into the fuel system.

3. 3

   Disconnect

   Unplug the electrical connector from the fuel level sensor.

4. 4

   Remove the Sensor

   Remove the retaining screws or the locking ring holding the sensor in place. Carefully extract the old sensor and float arm assembly from the tank.

5. 5

   Install the New Unit

   Insert the new sensor into the tank. Ensure a new gasket or seal is used to prevent fuel leaks.

6. 6

   Secure and Reconnect

   Tighten the retaining screws or locking ring. Reconnect the electrical connector.

7. 7

   Test

   Refill the fuel tank. Turn the ignition ON to verify the gauge reads accurately and the 00.2.31 fault code clears.