I guess everyone is saying go for the oxygen sensors first. Is that correct? It's only the rear two as well, right? Do I reset the codes and drive it again until it pops up again. Also if my MAF sensor was bad for a while and I recently had it replaced does that mean anything? Thanks for the help.

 

Try disconnecting your battery first.

I've had the same code so I disconnected my battery and the code was cleared but came back after a day. Then I started installing some parts and left the battery disconnected for a few weeks. When I reconnected the battery the second time, the code cleared and has been good for a month.

 

So theoretically if I knew my 0 to 60 time, would I be able to tell if the catalytic converter was bad if I floored it and got a lower reading?

 

https://www.clublexus.com/forums/gs-...and-p0430.html

This thread is just down towards the bottom of the front page, should be helpful.