accord2002death Posted September 7, 2012 Share Posted September 7, 2012 i got a 2002 accord 2.3 ltr 4 banger and i cant seem to get it to pass the smog test here in nevada. i just replaced the cat and the lower sensor on the car. and it is still throwing a code for the cat being bad. my question is do i need to replace the upper sensor as well? Link to comment Share on other sites More sharing options...
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