Engine Coolant Temperature - Data Valid but Above Normal (Most Severe)
The JD-SPN110-FMI0 (John Deere PowerTech) diesel fault code means: Engine Coolant Temperature - Data Valid but Above Normal (Most Severe). This is a critical severity code.
Unverified. We could not confirm this code's definition against freely available manufacturer documentation, so treat the meaning, severity and fix guidance on this page as unconfirmed. Check it against the manufacturer's service information for your exact model and serial range before acting on it. This page is kept out of search engines for that reason, and we are working through this family manual by manual.
- Keep driving?
- No — stop driving
- DIY difficulty
- intermediate
- Estimated cost
- $0-$150 cleanout, $180-$900 thermostat/fan clutch, $1,800-$3,500 EGR cooler, $6K+ head work
What Are the Symptoms of JD-SPN110-FMI0?
- Red STOP lamp, forced shutdown
- Rapid cooling fan engagement
- Coolant loss, steam from hood
What Causes JD-SPN110-FMI0? (Most Likely First)
- Plugged radiator screens (common on combines and windrowers) Very Likely
- Stuck thermostat / failed viscous fan clutch Likely
- Coolant leak at EGR cooler (known weak point on PowerTech 9.0L) Likely
- Failed water pump or cracked head gasket Possible
Can I Still Drive with JD-SPN110-FMI0?
No — stop driving. JD-SPN110-FMI0 is rated critical severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What is John Deere fault code SPN 110 FMI 0?
On John Deere PowerTech engines, SPN 110 FMI 0 means: Engine Coolant Temperature - Data Valid but Above Normal (Most Severe). Critical code -- stop operating until repaired.
Can I keep using my John Deere tractor with SPN 110 FMI 0?
Critical fault -- do not operate; tow or trailer to a dealer. Diagnose with John Deere Service ADVISOR via an EDL v3 / CF3 interface.
How much does it cost to fix John Deere SPN 110 FMI 0?
Repair cost range: $0-$150 cleanout, $180-$900 thermostat/fan clutch, $1,800-$3,500 EGR cooler, $6K+ head work. Dealer labor on large tractors runs $180-$240/hr in 2026.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose JD-SPN110-FMI0?
Blow out radiator and charge-air cooler from clean side with 80-100 psi.
Command fan to 100% via Service ADVISOR and verify pull.
Pressure-test cooling system -- combustion gas test if no external leak found.
On 9.0L PSS check EGR cooler for weeping.
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)
SPN110-FMI0 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
Which Vehicles Commonly Get JD-SPN110-FMI0?
- 2014+ John Deere 6R Series tractors
- 2015+ John Deere 7R Series tractors
- 2015+ John Deere 8R / 8RT Series tractors
- 2015+ John Deere 9R / 9RT / 9RX Series tractors
- 2015+ John Deere S670 / S680 / S690 combines
- John Deere S770 / S780 / S790 combines
- John Deere 544/644/724 wheel loaders (construction)
- John Deere 310/410 backhoes
Explore More
Was this helpful?
Send this to whoever is fixing the truck — your tech, or the person asking what the fault means.