Code came through for bank 1 sensor 1 for o2 sensor, Went out and bought the sensor and sensor socket. Attempted to change it, couldn’t get it to loosen so I sorta gave up, turned my car back on and then the engine light turned off. What could have happened. Because I legit didn’t do anything lol
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Do it when the exhaust is hot. I’ve had good luck using an impact on the o2 socket (if it’ll fit where you need it)