SPN 2791 — EGR Valve Control
System: EGR
The output circuit the engine computer uses to drive the EGR valve.
Can I keep running it?
MEDIUM — fix soon
Expect reduced performance and higher soot until fixed.
Likely causes
- EGR valve motor/solenoid failure
- Wiring open or short
- Valve stuck with carbon
Checks & fixes (easiest first)
- Check the control circuit for opens/shorts
- Command the valve with a scan tool
- Inspect and clean the valve
Common FMIs with SPN 2791
- SPN 2791 FMI 5Current below normal or open circuit
- SPN 2791 FMI 6Current above normal or grounded circuit
- SPN 2791 FMI 7Mechanical system not responding or out of adjustment
- SPN 2791 FMI 13Out of calibration
Related codes
FAQ
What does SPN 2791 mean?
SPN 2791 is EGR Valve Control. The output circuit the engine computer uses to drive the EGR valve.
Can I keep running with SPN 2791?
Expect reduced performance and higher soot until fixed.
What causes SPN 2791?
EGR valve motor/solenoid failure; Wiring open or short; Valve stuck with carbon.