Detailed guide for SPN 103 FMI 3
Back to top ↑Mass airflow data determines how much air is entering the engine. High voltage means the signal is reading too much air, often due to wiring or connector mishaps.
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Share ↓SPN 103 FMI 3Severity: Warning
SPN 103 FMI 3: Air mass flow sensor voltage high – fuel mix errors
Quick Answer
Air mass flow sensor voltage high – fuel mix errors
Code
SPN 103 FMI 3
Severity
Warning
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.
Common Symptoms
- Unstable idle
- COP issues
- Check engine light occasionally
Likely Causes
- Short to power
- Dirty sensor
- Connector integrity waning
Common Fixes
- Inspect and clean sensor
- Fix wiring shorts
- Replace sensor if error persists
Full technical sections↓
What does SPN 103 FMI 3 mean?
Back to top ↑Air mass flow sensor voltage high – fuel mix errors
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