SPN 110: engine coolant temperature
Engine coolant temperature. Type another SPN and FMI to check it.
Engine coolant temperature. Running hot can warp heads and blow gaskets.
- Let it cool, then check the coolant level.
- Blow out the radiator and cooler fins.
- Check the fan belt and fan drive.
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 110 means
Engine coolant temperature. Running hot can warp heads and blow gaskets.
How urgent it is
Stop the machine. This one can wreck the engine or hurt someone. Shut down where it's safe.
What to check first
- Let it cool, then check the coolant level.
- Blow out the radiator and cooler fins.
- Check the fan belt and fan drive.
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 110
| Code | What failed | Urgency |
|---|---|---|
| SPN 110 FMI 0 | above normal, most severe | Stop the machine |
| SPN 110 FMI 2 | erratic or intermittent | Fix it today |
| SPN 110 FMI 3 | voltage high or shorted high | Fix it today |
| SPN 110 FMI 4 | voltage low or shorted low | Fix it today |
| SPN 110 FMI 15 | above normal, least severe | Fix it today |
| SPN 110 FMI 16 | above normal, moderately severe | Stop the machine |
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 110 mean?
Engine coolant temperature. Running hot can warp heads and blow gaskets.
Can I keep running with SPN 110?
Stop the machine. Shut it down where it's safe and find the cause before you run it again. If the machine derates or the stop lamp is on, stop.
What should I check first for SPN 110?
Let it cool, then check the coolant level. Blow out the radiator and cooler fins. Check the fan belt and fan drive.
How do I clear SPN 110?
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 110?
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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