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The HO2S11 code on a 1997 Ford Explorer refers to a problem with the heated oxygen sensor (HO2S) located before the catalytic converter on the driver's side. This code indicates that the sensor is malfunctioning, which can lead to poor fuel economy, increased emissions, and potential engine performance issues. It is essential to diagnose and replace the faulty sensor to restore proper engine function and emissions control.

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1w ago

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