Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Least Severe)
The JD-SPN1075-FMI15 (John Deere PowerTech) diesel fault code means: Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Least Severe). This is a minor severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- intermediate
- Estimated cost
- $250-$950 injector or rail sensor, $1,200-$3,800 HPFP
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Common Symptoms
- Low power / derate under load
- Hard start or no-start after key-off heat soak
- Fuel knock at idle, particularly on cold start
Probable Causes (Ranked by Likelihood)
- Valve-cover injector harness broken at pass-through (classic PowerTech issue) Very Likely
- Sticking injector with carbon on control valve Likely
- Low rail pressure from HPFP wear or suction restriction Possible
- Water in fuel contaminating HPFP Possible
Frequently Asked Questions
What is John Deere fault code SPN 1075 FMI 15?
On John Deere PowerTech engines, SPN 1075 FMI 15 means: Fuel Filter Water-In-Fuel (WIF) Indicator - Data Valid but Above Normal Operational Range (Least Severe). Minor code -- monitor; does not affect safe operation. On 1025R/2025R/3025E compact tractors, short homeowner use prevents DEF / water separator purge -- drain water separator monthly.
Can I keep using my John Deere tractor with SPN 1075 FMI 15?
Minor fault -- finish the job, then service at the next opportunity. Diagnose with John Deere Service ADVISOR via an EDL v3 / CF3 interface.
How much does it cost to fix John Deere SPN 1075 FMI 15?
Repair cost range: $250-$950 injector or rail sensor, $1,200-$3,800 HPFP. Dealer labor on large tractors runs $180-$240/hr in 2026.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
Inspect / swap cylinder injectors using Service ADVISOR cylinder-cutout test.
Measure actual vs. desired rail pressure at full load and on crank.
Drain primary water separator and recheck fuel filter service interval.
Check injector harness through the valve cover -- broken wire is a known failure.
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
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