INJECTOR GP- 2123466 - Caterpillar

Use this procedure to troubleshoot high fuel pressure. Use this procedure if the following event code is active. Refer to Troubleshooting, "Codes" for information about event codes. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".
Table 1
J1939 Code and Description CDL Code and Description Comments
94-16
Engine Fuel Delivery Pressure : High - moderate severity (2) E1218 (2)
High Unfiltered Fuel Pressure The fuel pressure before the secondary filter is higher than expected.
Table 2
Associated Diagnostic Trouble Codes
J1939 Code CDL Code Troubleshooting Procedure
95-0 E390 (3) Troubleshooting, "Fuel Filter Is Restricted"
95-15 E390 (1) Troubleshooting, "Fuel Filter Is Restricted"
95-16 E390 (2) Troubleshooting, "Fuel Filter Is Restricted"
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Apply electrical power to the engine.
B. Connect Cat® Electronic Technician (ET) to the service tool connector.
C. Look for active codes that are associated with the system for the event code.
Codes
Result: An associated code is active.
Troubleshoot any associated codes before continuing with this test.
Result: A code is active or logged.
Proceed to Test Step 2.
Illustration 1 g03810811
Typical Fuel Filter
(1) Starting priority valve
(2) System pressure regulator
Table 4
Troubleshooting Test Steps Values Results
2. Check the Starting Priority Valve
A. Remove electrical power from the engine.
B. Remove the starting priority valve from the secondary fuel filter head. Refer to D&A