I’m not trying to be a dick but, you bought a somewhat highly modified X and don’t know how to diagnose a bad 02 sensor?
If your scan tool is telling you that your 02 sensor is not being detected then obviously that means there is a problem with the: A:Sensor, B:wiring, C:Connectors.
You bought a race car, you better learn how to google search or you are going to have a very bad time.
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