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I replaced 02 sensor 3 times on 2002 BMW 330ci engine light comes back do

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I replaced 02 sensor 3 times on 2002 BMW 330ci engine light comes back, what is the next step?

Vehicle: 2002 BMW 330ci

1 Answer

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Do a MAF airflow cleaning, this usually appears after a misfire event, that has been solved, and its usually the MAF that causes this to happen
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Limpia el máximo sensor con qd contacto clanes a mi me funciono espero te funcione

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