Fault Code: 449, 553, 2311 (SPN: 157)
Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level. The ECM has detected that fuel pressure in the rail fuel is higher than the commanded pressure.
Fault Code: 2216
Fuel pump delivery pressure – data valid but above normal operational range – moderately severe level. The ECM has detected fuel pressure in the fuel rail that is higher than the commanded pressure.
General troubleshooting steps:
#1 – Check for fuel return line restriction or closed valve.
#2 – Check for fuel supply restriction and ensure that all filters are clean.
#3 – Replace the rail pressure sensor. If you have twin engines, swap the sensors to see if it resolves the issue on the problematic engine.
#4 – Replace the common rail pump fuel actuator. If you have twin engines, swap the actuators to see if it resolves the issue on the problematic engine.
#5 – Replace the electric lift pump. If you have twin engines, swap the pumps to see if it resolves the issue on the problematic engine.
Potential Replacements Parts:
