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Upstream Oxygen Sensor Replacement on 2.0L Edge

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I have a 2016 Edge with the Ecoboost 2.0L engine which is throwing an O2  sensor code. I am trying to replace the upstream oxygen sensor, and am unable to get enough torque to break it free while stretching over the engine from above. The sensor is buried behind the engine near the firewall. The space is too tight to use a breaker bar or hammer.

 

Has anyone replaced this sensor? How did you do it?

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You've probably completed this, but our 2016 2.0 also reported P2196, I think it was, before it reported P1450, the vapor canister purge valve. I read the purge valve sticking can cause unrelated emission codes.  We replaced our purge valve and so far no further codes. Good luck.

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