Detailed guide for SPN 94 FMI 16
Back to top ↑Winter fuel problems love this code. Start with filters and fuel quality before you blame the expensive parts.
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Share ↓SPN 94 FMI 16Severity: Critical
SPN 94 FMI 16: Fuel delivery pressure below normal – restriction or weak lift pump
Quick Answer
Fuel delivery pressure below normal – restriction or weak lift pump
Code
SPN 94 FMI 16
Severity
Critical
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.
Common Symptoms
- Hard start (worse in cold)
- Power loss
- Stalling under load
Likely Causes
- Clogged filters
- Fuel gelling/water in fuel
- Weak lift pump
Common Fixes
- Replace filters and check for water
- Confirm winterized fuel
- Test lift pump pressure
Full technical sections↓
What does SPN 94 FMI 16 mean?
Back to top ↑Fuel delivery pressure below normal – restriction or weak lift pump
Video walkthrough for SPN 94 FMI 16
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Cummins X15 Engine Fault Codes Explained
Channel: Diesel Repair Community • View in BigRigFaults Media • YouTube source
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