Cummins ISX CM870 (2003-06) Fault Code: 2372 PID: P95 SPN: 95 FMI: 0/16 Fuel filter restriction moderately high – warning. Fuel filter is plugged or fuel inlet restriction is high.

Low fuel pressure during high engine speeds or motoring conditions indicates a fuel inlet restriction or a plugged pressure-side fuel filter.

Possible causes:

1)Plugged pressure or suction side fuel filter
2)Collapsed fuel inlet lines
3)Obstructed suction tube in fuel tank.
For engines with phase 4 or phase 5 software, in order to disable this fault code, the engine must be run above 1800 rpm under no load or a very light load for approximately 15 seconds.

If the engine speed is limited due to Maximum Engine Speed without vehicle speed sensor (VSS), one of the following methods can be used to clear this fault code:

1)Adjust the Maximum Engine Speed without VSS to a value above 1800 rpm and clear the fault code as stated above.
2)tart the Setup for Dynamometer Test in INSITE? and clear the fault code as stated above.
3)Run the unit in first gear with no load at wide open throttle for 15 seconds. NOTE: This method will not work if load based speed control is set to values less than 1800 rpm. For engines with phase 6 or greater software, the fault code will go inactive after ten seconds of idling. Therefore, the fault can be inactive even though the problem has not been found and fixed. Due to this interaction with phase 6 or greater software, this fault code must be followed for an inactive fault code.

Possible repairs:

1)Replace the pressure-side fuel filter.
2)Clean or replace the damaged fuel shutoff valve component.
3)Replace the suction-side fuel filter or repair the line restriction.