Do Not Sell My Personal Information Jump to content

Engine Check Po420 Code Catalyst


Recommended Posts

I bought this nice 2002 lexus is300 from a dealership, It threw an engine code of PO420 code catalyst Is that the Exhaust sensors ??? where is a cheap place to get them ebay? could it just be an exhaust leak of some sort throwing that code? the code reader shut it off for about 2 days then it popped back on. Car runs amazing though its not something I can ignore that bright orange little engine light check engine light. Whats my next step to turning that light off for good.

:blushing: :blushing:

Link to comment
Share on other sites

Yeah, sisnce your not getting a P0430 as well, it's probly just a bad sensor. It's off the 3 way catalyst on your header. I would replace both since your there. It's easy enouph.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...