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Code

P0440

Evaporative emissions

خلل نظام EVAP

نظام بخار الوقود به خلل.

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Most likely causes

غطاء مرتخي
تسرب EVAP

Symptoms you may notice

Check engine light

Checks to run

Tighten the fuel cap
Smoke test
Test the purge valve

Tools you may need

Smoke machine

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Evaporative emissions

تسرب صغير في نظام EVAP

خلل دائرة صمام تهوية EVAP

تسرب كبير في نظام EVAP

تسرب صغير جداً في EVAP

إشارة ضغط EVAP مرتفعة

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