SPN 5580 - FMI 18 (Event Codes: Low Fuel Pressure/ Engine Filtered Fuel Delivery Absolute Pressure Low)
E198 (2) - Low Fuel Pressure
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| Figure 1.1 - SPN 5580 FMI 18 |
#Diagnostic Trouble Code
→5580-17/ E198(1) - Fuel Pressure Low (The
code is logged)
→5580-18/ E198(2) - Fuel Pressure Low (The code is logged. The Engine power is derated. The
Electronic Control Module/ECM will illuminate the action lamp)
#Troubleshooting Test Step
1). Determine the Code
A. Connect
Cat Electronic Technician (ET) to the service tool connector. Read More: How to Connecting Caterpillar ET Software to the ECM.
B. Determine
if a Diagnostic Trouble Code is present or logged.
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| Figure 1.2 - Logged Event Codes (5580-18) |
2). Check the Fuel Level in the Tank
A. Visually
inspect the fuel level in the fuel tank. Ensure that the fuel tank contains
enough fuel in order to operate the Engine.
B. Ensure
that the fuel supply valve (if equipped) is in the full OPEN position.
3). Inspect the Fuel System for Leaks
A. Perform
a visual inspection of the fuel system. Verify that there are no fuel leaks.
Inspect the fuel lines from the fuel transfer pump to the secondary fuel filter
base for restrictions.→Cold
weather adversely affects the characteristics of the fuel.
4). Check the Fuel Pressure Sensor
A. Record
the fuel pressure from Cat ET and on the pressure gauge.
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| Figure 1.3 - Fuel Pressure (800 RPM) |
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| Figure 1.4 - Fuel Pressure (1800 RPM) |
5). Replace the Fuel Filters
A. Replace
the primary filter, the secondary filter, and the tertiary fuel filters.
B. Reset
all active codes by cycling the keyswitch to the OFF position for 2 minutes.
6). Check for Air in the Fuel System
A. Check
for air in the fuel.
7). Replace the Fuel Return Pressure Regulator
A. Replace
the fuel return pressure regulator.
B. Inspect
the anti-drain check valve for proper operation.
8). Replace the Transfer Pump
A. Replace
the transfer pump.Read More:
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