P0131 Fix 2012-18 Ford Focus O2 Sensor Replacement

This video will show you how to fix the check engine light and poor fuel economy due to code P0131 on the 2012-2018 Ford Focus by replacing the upstream oxygen sensor. O2 sensor and tools used in the video were purchased from Amazon and I have provided links below.
Motorcraft O2 Sensor: amzn.to/3FwxKze
Scan Tool: amzn.to/46OGIUw
O2 Socket: amzn.to/3FyPbzb

[@marywells6718]

7/8 is not sitting on the sensor correctly, and I cannot get it loose.

[@user-ky7ty3ie1x]

Hi do you know if crankshaft sensor would prevent no crank

[@BLUECOLLARGARAGE]

Is it cranking and just not starting?

[@user-ky7ty3ie1x]

Hi was it no start issue

[@BLUECOLLARGARAGE]

No it started just fine. Check engine light came on and was getting poor fuel mileage.

[@Case_]

If your engine doesn't start, it's unlikely to be an oxygen sensor issue, because oxygen sensors are not even used on engine start, they come on a bit later (how much later depends on car and sensor), because they need to heat up to working temperature first to give reliable data.