2002 Ford Explorer V6, what is an upstream heated oxygen sensor switch?

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2002 Ford Explorer V6, what is an upstream heated oxygen sensor switch?

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OBDIITech · Answer 1 · 2017-10-15T05:30:00+0000

What code do you have?

The "Upstream Heated Oxygen Sensor" is the "Front O2 Sensor". The O2 Sensor Switch is called when the O2 sensor changes the signal send to the Engine Control Module (ECM).

2002 Ford Explorer V6, what is an upstream heated oxygen sensor switch?

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