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P2238-02 toyota

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what does this error code mean?

Vehicle: 2004 toyota sienna

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P2238 Oxygen sensor pumping current circuit low ((Airflow sensor) Bank 1 sensor 1

What it means is you have a malfunctioning airflow sensor at bank 1 sensor 1, Even though this is a air flow sensor it referred to as a oxygen sensor . A replacement will be the solution

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