HUB AS 3P1626 - Caterpillar

The Electronic Control Module (ECM) detects an abnormal fuel filter differential pressure.Use this procedure if one of the following event codes is active. Access the engine monitoring system on Caterpillar Electronic Technician (ET) in order to view the current trip points for these codes. Refer to Troubleshooting, "Engine Monitoring Parameters" for information about engine events.
Table 1
Engine Event
J1939 Code and Description Conditions that Generate the Code System Response
5584-15 Fuel Filter Restriction : High - least severe (1) The difference between the filtered fuel pressure and the unfiltered fuel pressure is greater than the trip point pressure. The code is logged.
5584-16 Fuel Filter Restriction : High - moderate severity (2) Probable Causes
Fuel filter elementsRecommended Actions
Fuel Filter Elements
Replace the fuel filter elements.
Prime the fuel system. Refer to the Operation and Maintenance Manual for information.
Restart the engine and check for an active event code.
If the above event code remains active, check for logged diagnostic codes that are related to the fuel pressure sensor. If logged codes are present, check for intermittent problems in the harness or in the wiring to the fuel pressure sensor. Refer to Troubleshooting, "Electrical Connectors - Inspect" for information that is related to intermittent electrical problems.