How to Replace O2 Down Stream Oxygen Sensor 1998-2012 Ford Ranger

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In this video, we're going to be working with our 2001 Ford Ranger, 4.0-liter V6. We're going to show you how to remove and replace your rear or downstream O2 sensor.

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The only items you'll need for this repair are a new O2 sensor and a 22mm wrench

Your O2 sensor is located here, where the exhaust pipe becomes one single piece again right after this double-up cat. The electrical connector is located up here on the side of the transmission. We'll push down on the tab and disconnect that to start. Using a 22-mm open-end wrench, loosen the O2 sensor socket and remove it from the exhaust pipe. Remove the O2 sensor from the exhaust.

Install your new O2 sensor and thread it in as far as you can by hand. Tighten the O2 sensor back in with a 22-mm open-end wrench. Reconnect your electrical connector and you're good to go.

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