CORE AS-RDTR 3874365 - Caterpillar

Table 1
Event Code
Description Conditions which Activate the Code System Response
E865 (1) High Gas Fuel Differential Pressure The difference in fuel pressure between the inlet and the outlet of the fuel metering valve is greater than the trip point. The delay time has expired. The alarm output is activated. The code is logged. Note: Refer to Troubleshooting, "Engine Monitoring System" for information on trip points and delay times.Probable Causes
Excessive fuel supply pressure
Leaks in the piping after the fuel metering valveRecommended Repairs
Check the Fuel Supply Pressure
Check the pressure of the fuel supply to the fuel metering valve for high pressure. The maximum allowable pressure to the fuel metering valve is 35 kPa (5 psi).Adjust the gas pressure regulator in order to achieve the correct pressure.If the gas pressure regulator cannot be adjusted to the correct setting, repair the regulator or replace the regulator.Check for Leaks
Use a gas detector to check for leaks in the piping between the outlet of the fuel metering valve and the turbocharger compressor.Repair the piping, if necessary.