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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

  1. Fuite d’air
  2. Injecteurs bouchés
  3. Pression de carburant basse
  4. Défaut MAF
  5. Fuite d’échappement

Symptoms you may notice

  • Check engine light
  • Rough idle
  • Hesitation
  • Higher consumption

Checks to run

  1. Smoke-test the intake
  2. Check fuel pressure
  3. Clean/test MAF
  4. 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.

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