John Deere Fault Code
Free · no signupSPN 3719 FMI 16
Soot Level High / Regen Forced.
System
Aftertreatment
Symptom
Soot Level High / Regen Forced.
Diagnosis & fix steps
LOGIC: Particulate Filter (DPF) is over 80% full.
ACTION: Perform a Parked Regen immediately. If it fails, pull the DPF and check for "Face Plugging" (ash buildup).
Red Seal field insights
Specs: DPF Differential Pressure should be < 2.0 psi at high idle.
PRO-TIP: Constant idling is the "silent killer" here. Tell the operator to keep the RPMs up.
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