JD-SPN4767-FMI1 serious John Deere PowerTech ›

Aftertreatment DOC Efficiency Monitor - Data Valid but Below Normal Operational Range (Most Severe)

The JD-SPN4767-FMI1 (John Deere PowerTech) diesel fault code means: Aftertreatment DOC Efficiency Monitor - Data Valid but Below Normal Operational Range (Most Severe). This is a serious severity code.

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Keep driving?
Yes, with caution
DIY difficulty
advanced
Estimated cost
$260-$780 DOC temp sensor, $2,800-$6,000 DOC replacement
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Common Symptoms

  • Active regen failure or abnormally long regen time
  • DOC temperature sensor fault on operator display
  • Elevated tailpipe HC / CO emissions

Probable Causes (Ranked by Likelihood)

  • DOC inlet / outlet temp sensor failure Likely
  • Soot contamination on thermocouple tip Likely
  • DOC face plugged by unburnt fuel from injector leak Possible
  • HC doser / 7th injector soot build-up on the upstream side Possible

Frequently Asked Questions

What is John Deere fault code SPN 4767 FMI 1?

On John Deere PowerTech engines, SPN 4767 FMI 1 means: Aftertreatment DOC Efficiency Monitor - Data Valid but Below Normal Operational Range (Most Severe). Serious code -- address promptly to avoid inducement / further damage.

Can I keep using my John Deere tractor with SPN 4767 FMI 1?

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 4767 FMI 1?

Repair cost range: $260-$780 DOC temp sensor, $2,800-$6,000 DOC replacement. Dealer labor on large tractors runs $180-$240/hr in 2026.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Watch DOC inlet vs. outlet Δ during active regen -- should rise >100 °C.

  2. Inspect DOC substrate for melt / glazing -- requires replacement.

  3. Clean or replace the DOC temperature sensor harness and thermocouple.

  4. Inspect HC doser or 7th injector fuel pattern.

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)
  • John Deere S670 / S680 / S690 combines
  • John Deere S770 / S780 / S790 combines
  • 2021+ John Deere X9 1000 combine
  • John Deere 1025R sub-compact utility tractor
  • John Deere 2025R / 2038R / 2032R compact utility tractors
  • John Deere R4045 / R4060 self-propelled sprayers

Explore More

More John Deere PowerTech codes → Diesel home All diesel codes Heavy-duty Guides

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