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Posted

hello, I need some info on changing the o2 sensor on my 2004 ls430 . it is bank 1, sensor 2, I just bought the sensor. looked under the car and how do you get to the connector to unplug the sensor? any special tools needed? the part store told me it's the drivers side, rear 02 sensor! how do I change it? thanks !!!

Posted

Why do you think this sensor is bad? What codes did you get?

I suggest an O2 sensor socket. They are 6 point so the sensor doesn't strip on removal and have a keyway for the cable. They get pretty stiff after many year and thousands of heat cycles. You'll probably need a breaker bar too.

Posted

you might as well replace both of them; if one side went the other one is probably not far behind.

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