Fault Code 2372
Cummins
High Fuel Rail Pressure
Controller logs Fault Code 2372 – Fuel Rail Pressure Too High (common rail diesel)
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Stuck fuel pressure relief valve, Faulty fuel metering valve on high-pressure pump, Rail pressure sensor error, ECM control issue
How to Fix / Troubleshooting
Safety first: High-pressure fuel is hazardous. Do not loosen high-pressure components. Disable automatic start.
- Scan data (if available): Review live rail pressure readings versus commanded values using Cummins diagnostic tools (typically technician-only).
- Inspect wiring: Check connectors at the fuel rail pressure sensor and metering valve for damage or corrosion.
- Filter condition: Ensure fuel filters are not excessively restricted, which can affect control.
- Professional service: High rail pressure faults generally require specialized tools and should be addressed by a Cummins technician to avoid injury and engine damage.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Fuel Metering Valve
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements