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Where is the B1S1 Upstream Oxygen sensor located on 2017 Ford Fusion SE Ecoboost?

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by (101 points)

It's a 1.5L engine. My OBD2 reads P0131 code. I am having trouble finding the location on the engine for the Bank 1 Sensor 1 upstream. Can you please help?

Vehicle: 2017 Ford Fusion SE Ecoboost 1.5L

1 Answer

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by (8.9k points)

The sensor is on the back of the engine. here is the only image I got. I hope it helps

Ford Fusion Oxygen Sensor Location

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