SPN 3719 FMI 2: DPF soot load, erratic or intermittent
DPF soot load estimate is erratic. Type another SPN and FMI to check it.
DPF soot load estimate is erratic. Usually bad input from the DPF pressure or temperature sensors.
- Check the DPF pressure sensor hoses and the exhaust temperature sensors.
- Fix those codes first.
Paste the whole line if you like: "SPN 3251 FMI 0", "3251/0" or Deere's "003251.00". Plain-words guidance; the service manual wins.
What SPN 3719 FMI 2 means
DPF soot load estimate is erratic. Usually bad input from the DPF pressure or temperature sensors.
FMI 2: erratic or intermittent
Reading jumps around or doesn't make sense. Often a loose plug, a bad wire, or two sensors that disagree. (SAE J1939-73: Data erratic, intermittent or incorrect.)
How urgent it is
Fix it today. Fix it this shift or today. Left alone it tends to become a derate.
What to check first
- Check the DPF pressure sensor hoses and the exhaust temperature sensors.
- Fix those codes first.
Plain-words guidance for a foreman, not a repair procedure. Makers add their own codes and steps; the machine's service manual wins.
Other FMIs for SPN 3719
| Code | What failed | Urgency |
|---|---|---|
| SPN 3719 FMI 0 | above normal, most severe | Stop the machine |
| SPN 3719 FMI 15 | above normal, least severe | Schedule it |
| SPN 3719 FMI 16 | above normal, moderately severe | Fix it today |
| SPN 3719 FMI 31 | condition exists | Fix it today |
Next time, Dozer catches the code when it fires.
Plug a CAN logger into the machine's J1939 port, or connect the telematics you have. When a code fires, Dozer opens a repair ticket with the meaning, how urgent it is and what to check.
- The code, the machine and its hours on one ticket
- Severity sorted: keep working, plan a stop, or stop now
- The mechanic gets the checklist before they drive out
- Repeat codes on the same machine get flagged
LIVE EX-04 · SPN 3251 FMI 0 · plan a stop today Photo is an AI-generated stand-in, not a customer site.
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Questions crews ask
What does SPN 3719 FMI 2 mean?
DPF soot load estimate is erratic. Usually bad input from the DPF pressure or temperature sensors. FMI 2 means: Reading jumps around or doesn't make sense. Often a loose plug, a bad wire, or two sensors that disagree.
Can I keep running with SPN 3719 FMI 2?
Fix it today. Finish what's safe to finish, then fix it this shift. Ignoring it usually turns into a derate or a bigger repair. If the machine derates or the stop lamp is on, stop.
What should I check first for SPN 3719 FMI 2?
Check the DPF pressure sensor hoses and the exhaust temperature sensors. Fix those codes first.
How do I clear SPN 3719 FMI 2?
Fix the cause first. Most codes go inactive by themselves once the condition is gone and the engine has run a key cycle or two. Clearing it with a service tool without a fix only hides it until it comes back.
Which machines show SPN 3719 FMI 2?
Any diesel that speaks SAE J1939: excavators, dozers, loaders, haul trucks, generators and on-road trucks with Cat, Cummins, Deere, Komatsu, Volvo, Kubota, Perkins and other engines. The SPN means the same thing on all of them; the fix steps can differ, so check the service manual.
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