NON-GROOVED--MAIN 1W1664 - Caterpillar

The connection of any electrical equipment and the disconnection of any electrical equipment may cause an explosion hazard which may result in injury or death. Do not connect any electrical equipment or disconnect any electrical equipment in an explosive atmosphere.
Use this procedure in order to troubleshoot high fuel pressure. Use this procedure if the following event code is active. Refer to Troubleshooting, "Event Codes" for information about event codes and the default trip points for these codes. You must access the monitoring system on Caterpillar Electronic Technician (ET) in order to view the current trip points for these codes.
Table 1
Event Code
Code and Description Conditions which Generate this Code System Response
E096(1) High Fuel Pressure The fuel pressure is above the trip point for eight seconds. The code is logged. Probable Causes
Fuel pressure regulating valve
Pressure relief valve
Fuel linesRecommended Actions
Fuel Pressure Regulating Valve
A improperly operating fuel pressure regulating valve may cause high fuel pressure. If a problem is suspected, inspect the return fuel pressure regulating valve. Clean any contamination or debris that may keep the regulating valve from operating properly. If debris is present, find the source of the contamination. Replace the return fuel pressure regulating valve if the valve is worn or damaged.Pressure Relief Valve
There is a pressure relief valve that is used to return excess fuel volume to the inlet side of the fuel transfer pump. Check the outlet pressure of the fuel transfer pump. Refer to the Systems Operation/Testing and Adjusting manual for details. If the fuel transfer pump is the cause of the problem, replace the fuel transfer pump.Fuel Lines
Inspect the fuel lines for damage. A restricted return fuel line can increase fuel pressure.