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
What Are the Symptoms of JD-SPN2791-FMI14?
- Lack of throttle response
- Black smoke under load
- EGR-related derate on aftertreatment models
What Causes JD-SPN2791-FMI14? (Most Likely First)
- 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
Can I Still Drive with JD-SPN2791-FMI14?
Yes, with caution. JD-SPN2791-FMI14 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
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
How Do You Diagnose JD-SPN2791-FMI14?
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)
Which Vehicles Commonly Get JD-SPN2791-FMI14?
- 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
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