Massey Ferguson 00157.16 – ECU: Fuel Rail Pressure High (ECU)
Issue description
The Engine Control Unit (ECU) has detected that the fuel rail pressure exceeds the acceptable threshold for the current engine operating conditions (Engine Injector Metering Rail #1 Pressure: High). This indicates a problem with pressure regulation or pressure sensing components on the high-pressure side of the fuel system. When logged, the system will typically derate engine power to prevent potential damage.
Applies to these machines
73 machines- 4608
- 4609
- 4610
- 4707
- 4708
- 4709
- 4710
- 5465
- 5470
- 5475
- 5480
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 5710SL
- 5711SL
- 5712SL
- 5713SL
- 6465
- 6475
- 6480
- 6485
- 6490
- 6495
- 6497
- 6499
- 6612
- 6613
- 6614
- 6615
- 6616
- 7497
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714
- 7715
- 7715S
- 7716
- 7716S
- 7718
- 7718S
- 7719
- 7720
- 7720S
- 7722
- 7722S
- 7724
- 7724S
- 7726
- 7726S
- 8450
- 8460
- 8470
- 8480
- 8650
- 8660
- 8670
- 8680
- 8727
- 8730
- 8732
- 8735
- 8737
Check the cause
Visually inspect the entire fuel system (fuel rail, injectors, high-pressure lines) for leaks, damage, corrosion, fuel wetness, or a strong smell of diesel.
Use a diagnostic scanner to check for any other active or stored fault codes related to the fuel system.
Ensure the fuel tank is filled with clean, high-quality diesel and inspect fuel filters for blockage or contamination, replacing them if necessary.
Perform a Key-On/Engine-Off test to prime the fuel pump; the pressure should rise and hold steady. A drop indicates a leaking component.
Perform a fuel pressure test by connecting a gauge to the fuel rail test port and comparing the idle reading to manufacturer specifications. Pressure that is excessively high points towards a regulation issue.
Repair steps
Prepare for FPRV bottle test
To check for a faulty or sticking fuel pressure relief valve (FPRV), locate the valve on the fuel rail and its return line. Disconnect the return hose from the valve and plug the hose. Attach a new length of hose to the valve's return port and route the other end into a clean, clear container.
Test FPRV for leaks
Start the engine and let it idle. No fuel should be discharged into the container during normal operation. If safe to do so, perform a brief, hard acceleration to command maximum rail pressure. If any fuel discharges into the bottle, the relief valve is leaking and must be replaced.
Inspect fuel rail pressure sensor wiring
If the pressure relief valve is functioning correctly, the fuel rail pressure sensor may be faulty, providing an inaccurate high reading to the ECU. With the ignition off, disconnect the electrical connector from the sensor and inspect the connector and terminals for corrosion, damage, or loose connections.
Test fuel rail pressure sensor
Using a multimeter, test the sensor and its wiring for proper supply voltage and resistance between the terminals. Compare these readings to the manufacturer's specifications.
Replace components and verify
Replace any confirmed faulty components with genuine OEM parts. Clear the fault codes and perform a test drive to ensure the issue is resolved.
Parts you might need
(16)- Fuel Rail Pressure SensorV837079599
Manufactured by Bosch. Always confirm fitment with the vehicle's serial number. Other aftermarket part numbers include V837079434 and V837070209.
Fuel Pressure Relief Valve
Contact an authorized AGCO dealer with the tractor's serial number to obtain the correct part number.
Fuel Filter
Varies by tractor model. Use genuine Massey Ferguson fuel filters to ensure proper filtration.
- Fuel Rail Pressure Sensor (3-Pin)V837069410
Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
- Fuel Rail Pressure Sensor (3-Pin)V837070209
Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
V837079434Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
ACP0307650Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
ACP0309980Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
837079599Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
0281002937Bosch (OEM Supplier). Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Rail Pressure Sensor (3-Pin)
0281006177Bosch (OEM Supplier). Thread sizes vary by rail (e.g., M14 x 1.5 or M18 x 1.5). Verify the thread pitch of the removed sensor before ordering.
Fuel Pressure Regulator / Control Valve (DRV/SCV)
1465ZS0016Bosch (OEM Supplier)
Manufacturer: AGCO Parts / Bosch
Manufacturer: AGCO Parts / Bosch
Hydraulic Relief Valve
1633216M91Alternate part number: 1633216M92. Note: These parts are listed for hydraulic systems and may not be applicable to the common rail fuel system. It is crucial to differentiate between hydraulic system relief valves and fuel system pressure relief valves.
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