SENSOR GP-LIQUID LEVEL 1747428 - Caterpillar

Which Generate This Code:The engine has been running for 60 seconds and the Electronic Control Module (ECM) has identified fuel pressure that is less than 225 kPa (33 psi) for 10 seconds.System Response:The ECM will log the event.Caterpillar Electronic Technician (ET) will display "Engine Derate" on any Cat ET status screen. The ECM derates the engine power by 17.5 percent per second. The maximum derate is 39 percent. The ECM will restore full power when the fuel pressure rises above 235 kPa (34 psi) for four seconds.The engine power is derated.Test Step 1. Replace the Fuel Filter
Replace the engine's fuel filter. Prime the fuel system.Refer to the engine's Operation and Maintenance Manual for the correct procedure.
Start the engine. Use Cat ET to check for another occurrence of the event.Expected Result:The event does not recur.Results:
OK - The event does not recur. Stop.
NOT OK - The ECM is detecting an abnormal fuel pressure in the fuel system.Repair: Refer to Systems Operation/Testing and Adjusting, "Fuel System Pressure - Test" for information that relates to testing the fuel system. Stop.