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Code

P0401

Emissions / EGR

تدفق EGR غير كافٍ

لا يتم تدوير غازات كافية، غالباً بسبب الترسبات.

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Most likely causes

صمام EGR مسدود
صمام تالف
سولينويد مسدود

Symptoms you may notice

Check engine light
Spark knock under load
Failed emission test

Checks to run

Inspect the EGR valve for carbon
Clean EGR passages
Test EGR operation

Tools you may need

Socket set EGR cleaner

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

Related codes in Emissions / EGR

خلل دائرة صمام EGR

إشارة حساس موضع EGR منخفضة

خلل تدفق EGR

صمام EGR — مدى / أداء

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