Detailed guide for SPN 3713 FMI 31
Back to top ↑A “timeout” regen means it tried but couldn’t stay hot enough. Usually: idle time, leaks, or sensors lying.
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Share ↓SPN 3713 FMI 31Severity: Warning
SPN 3713 FMI 31: Regen inhibited due to timeout – regen attempts not completing
Quick Answer
Regen inhibited due to timeout – regen attempts not completing
Code
SPN 3713 FMI 31
Severity
Warning
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.
Common Symptoms
- Regen starts then fails
- Soot load rises steadily
- Exhaust temps don’t reach target
Likely Causes
- Too cold/too much idle
- Exhaust leak losing heat
- Bad temp/pressure sensor data
Common Fixes
- Check for exhaust leaks upstream of DPF
- Verify EGT sensors read plausibly
- Correct operating conditions and complete regen
Full technical sections↓
What does SPN 3713 FMI 31 mean?
Back to top ↑Regen inhibited due to timeout – regen attempts not completing
Images for SPN 3713 FMI 31 (location, common failures)
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Aftertreatment schematic. Regen timeouts often occur when target temps are not maintained.
Credit: Wikimedia Commons • License: License on file page
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