EGR Valve Position - Special Instructions
The JD-SPN2791-FMI14 (John Deere PowerTech) diesel fault code means: EGR Valve Position - Special Instructions. This is a serious severity code.
- Keep driving?
- Yes, with caution
- DIY difficulty
- intermediate
- Estimated cost
- $180-$650 EGR valve or cooler cleaning, $900-$2,400 cooler R&R
A $30 car code reader can't do diesel. The HD7000 reads full-system codes and does parked DPF regen, idle/speed-limit, and service resets from the cab — on everything from a 6.7 Cummins/Power Stroke/Duramax pickup to Class-8 trucks (Detroit, Paccar, CAT, Volvo, Mack, International).
Full-system 6/9/16-pin diesel scan tool for Cummins, Paccar, CAT, Detroit and more — plug-and-play, no subscription. A cheaper way to read heavy-duty codes a basic OBD2 scanner skips entirely.
Affiliate links — we earn a commission at no extra cost to you.
Common Symptoms
- Lack of throttle response
- Black smoke under load
- EGR-related derate on aftertreatment models
Probable Causes (Ranked by Likelihood)
- Carbon packed on EGR valve seat Very Likely
- EGR cooler internal leak (coolant in intake) Possible
- EGR position sensor out of calibration Likely
- EGR actuator stepper motor failure Possible
Frequently Asked Questions
What is John Deere fault code SPN 2791 FMI 14?
On John Deere PowerTech engines, SPN 2791 FMI 14 means: EGR Valve Position - Special Instructions. Serious code -- address promptly to avoid inducement / further damage.
Can I keep using my John Deere tractor with SPN 2791 FMI 14?
Serious fault -- you can move the machine to a shop but don't run it under load. Diagnose with John Deere Service ADVISOR via an EDL v3 / CF3 interface.
How much does it cost to fix John Deere SPN 2791 FMI 14?
Repair cost range: $180-$650 EGR valve or cooler cleaning, $900-$2,400 cooler R&R. Dealer labor on large tractors runs $180-$240/hr in 2026.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
Service ADVISOR EGR sweep test -- confirm actual vs. desired vane/valve position.
Pressure-test EGR cooler for coolant leak if coolant loss is unexplained.
Inspect intake for excessive carbon build-up; scrape if >3/8 inch.
Check for exhaust back-pressure out of spec causing EGR hang-up.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J1939-73Application Layer: Diagnostics (defines the SPN/FMI fault-identifier framework)
Commonly Affected Vehicles
- 2015+ John Deere 7R Series (7210R, 7250R, 7290R, 7310R)
- 2015+ John Deere 8R / 8RT Series (8245R-8370R)
- 2015+ John Deere 9R / 9RT / 9RX Series (9370R-9620R)
- John Deere S670 / S680 / S690 combines
- John Deere S770 / S780 / S790 combines
- John Deere 544 / 624 / 724 wheel loaders
- John Deere R4045 / R4060 self-propelled sprayers
Explore More
Was this helpful?
Send this to whoever is fixing the truck — your tech, or the person asking what the fault means.