Ford OEM – (Rear) O₂ Sensor – 2020-2024 Explorer ST
This is a genuine Ford OEM rear oxygen sensor designed specifically for the 2014–2019 Fiesta ST 1.6L EcoBoost.
The rear O₂ sensor, located after the catalytic converter, monitors exhaust gas composition to ensure proper catalyst efficiency and emissions system performance. Accurate readings are essential for preventing check engine lights and maintaining proper ECU operation.
Common symptoms of a failing rear O₂ sensor include:
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Check engine light (often catalyst efficiency codes such as P0420)
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Failed emissions testing
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Reduced fuel efficiency
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Inconsistent post-catalyst readings
This is a direct-fit OEM replacement featuring factory-correct connector, wiring length, and calibration for seamless installation.
Fitment
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2014–2019 Ford Fiesta ST 1.6L EcoBoost
Need help with installation?
If you’d like to schedule an O2 sensor install, give us a call at (423) 500-4901 or email sales@emsinc-tn.com and we’ll get you set up.
Why EMS?:
We source this part directly from Ford OEM channels—no aftermarket knockoffs. You get factory specs, reliable performance, and total fitment confidence.

Call us (423) 500-4901 or
Email us at sales@emsinc-tn.com
WWW.EMSINC-TN.COM








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