Cylinder #3 Injector - Current Below Normal (Open Circuit)
Can I Drive?
Yes, But Fix Soon
DIY Difficulty
intermediate
Estimated Cost
$250-$650 injector
What does JD-SPN653-FMI5 mean?
The JD-SPN653-FMI5 (John Deere PowerTech) diesel fault code means: Cylinder #3 Injector - Current Below Normal (Open Circuit). This is a serious severity code.
Common Symptoms
- Misfire on cyl 3 at idle
- Elevated crankcase pressure if injector is blowing by
Probable Causes (Ranked by Likelihood)
- Harness wire broken at valve cover Very Likely
- Failed injector solenoid Likely
Step-by-Step Diagnostic Procedure
Inspect wiring, run cylinder balance in Service ADVISOR.
Frequently Asked Questions
What is John Deere fault code SPN 653 FMI 5?
On John Deere PowerTech engines, SPN 653 FMI 5 means: Cylinder #3 Injector - Current Below Normal (Open Circuit). Serious code -- address promptly to avoid inducement / further damage.
Can I keep using my John Deere tractor with SPN 653 FMI 5?
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 653 FMI 5?
Repair cost range: $250-$650 injector. Dealer labor on large tractors runs $180-$240/hr in 2026.