Detailed guide for SPN 3052 FMI 31
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Share ↓SPN 3052 FMI 31Severity: Warning
SPN 3052 FMI 31: Misfire monitor condition exists (rough running complaint)
Quick Answer
Misfire monitor condition exists (rough running complaint)
Code
SPN 3052 FMI 31
Severity
Warning
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.
Common Symptoms
- Rough idle
- Shaking under load
- Uneven power
Likely Causes
- Injector imbalance
- Air/fuel issues
- Bad data affecting fueling
Common Fixes
- Check for related injector/cylinder faults
- Review contribution tests if available
- Fix air/fuel issues before swapping injectors
Full technical sections↓
What does SPN 3052 FMI 31 mean?
Back to top ↑Misfire monitor condition exists (rough running complaint)
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