Code
P0174
Fuel / Air
Mélange trop pauvre — Rangée 2
La rangée 2 est trop pauvre — les trims ajoutent du carburant.
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Most likely causes
- Fuite d’air
- Injecteurs bouchés
- Pression de carburant basse
- Défaut MAF
- Fuite d’échappement
Symptoms you may notice
- Check engine light
- Rough idle
- Hesitation
- Higher consumption
Checks to run
- Smoke-test the intake
- Check fuel pressure
- Clean/test MAF
- Monitor fuel trims
Tools you may need
Smoke machine
Fuel pressure gauge
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.