Massey Ferguson E 9153 (31) – Engine ECU: Fuel Filter Pressure Sensor Loose Contact

The Engine Control Unit (ECU) has detected an intermittent or unstable connection in the fuel filter pressure sensor's electrical circuit. This typically indicates a problem with the wiring, connectors, or pins rather than a faulty sensor, which can lead to inaccurate fuel pressure readings or a temporary loss of signal.

• 8650
• 8660
• 8670
• 8680
• 8690
• 7600 Series
• 4700 Series
• 5700 Series
• 6700 Series

1. 1

   Inspect the wiring harness and the connector at the fuel filter pressure sensor for loose pins, backed-out terminals, or corrosion.

2. 2

   Check battery wiring and connectors for possible loose contact or oxidation, as voltage irregularities can trigger sensor dropouts.

3. 3

   Swap the sensor with a known good fuel filter pressure sensor to see if the fault clears. If the code disappears, the original sensor has an internal open circuit.

4. 4

   Verify the fuel level in the tank and ensure there is no physical damage to the fuel lines that might be causing erratic pressure readings mimicking a sensor dropout.

1. 1

   Power down and isolate ECU

   Turn off the tractor. Disconnect the main connector of the EEM control unit before carrying out any electrical repairs or welding to prevent voltage spikes.

2. 2

   Repair harness or connector

   If the diagnostic checks revealed a broken wire or corroded connector at the sensor pigtail, splice in a new connector or clean the contacts with electrical contact cleaner. Ensure the connector clicks firmly into place.

3. 3

   Replace fuel filter pressure sensor

   If the wiring is intact but the sensor is internally faulty: Relieve any residual fuel pressure. Unplug the electrical connector from the fuel filter pressure sensor. Unscrew the faulty sensor from the fuel filter housing. Install the new sensor and tighten to OEM specifications. Reconnect the electrical harness.

4. 4

   Clear codes and verify

   Reconnect the EEM/battery, turn the key to the ON position, and use a diagnostic tool to clear the inactive E 9153 (31) code. Run the engine to verify the code does not return.