guiltfree Posted July 29, 2012 Report Share Posted July 29, 2012 how many O2 sensors dose my lexus have? do i have to change them all at one go? Link to comment Share on other sites More sharing options...
shoor Posted July 29, 2012 Report Share Posted July 29, 2012 there are three of them and yes its best to change all of them. Link to comment Share on other sites More sharing options...
shadow79 Posted December 15, 2013 Report Share Posted December 15, 2013 why dnt you get it checked by a diagnostic machine and then change the one which actually has the issue as oxy sensors are expensive i wouldn't recommend anyone changing all at once and usually it goes bad becos of worn spark plugs as unburnt fuel is poison for the oxy sensors and the cat as well.... and the cat is really expensive i bought it for es 2007 for 3.4k aed Link to comment Share on other sites More sharing options...
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