Detailed guide for SPN 108 FMI 18
Back to top ↑Barometric pressure data is used to adjust fueling and boost, especially in mountainous regions.
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Share ↓SPN 108 FMI 18Severity: Warning
SPN 108 FMI 18: Barometric pressure sensor below normal – altitude or sensor issue
Quick Answer
Barometric pressure sensor below normal – altitude or sensor issue
Code
SPN 108 FMI 18
Severity
Warning
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.
Common Symptoms
- Reduced power at altitude
- Fuel economy changes
Likely Causes
- Sensor drift
- Blocked sensor vent
Common Fixes
- Inspect sensor vent
- Replace sensor if readings are inaccurate
Full technical sections↓
What does SPN 108 FMI 18 mean?
Back to top ↑Barometric pressure sensor below normal – altitude or sensor issue
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