55wong Posted March 16, 2013 Share Posted March 16, 2013 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 !!! Quote Link to comment Share on other sites More sharing options...
sha4000 Posted March 17, 2013 Share Posted March 17, 2013 You more than likely will have to pull up the carpet in front of the drivers seat if it's anything like the 98-00 LS. Here you go. http://www.clublexus.com/forums/ls430/445158-ls430-oxygen-o2-sensor-location-and-part-numbers.html Quote Link to comment Share on other sites More sharing options...
curiousB Posted March 18, 2013 Share Posted March 18, 2013 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. Quote Link to comment Share on other sites More sharing options...
jainla Posted March 19, 2013 Share Posted March 19, 2013 you might as well replace both of them; if one side went the other one is probably not far behind. Quote Link to comment Share on other sites More sharing options...
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