Quadragin Posted April 25, 2021 Share Posted April 25, 2021 We have a 05 GX got the p0430 bank 2 catalyst.... replaced all 4 o2 sensors but my numbers are really weird any help would be great I have attached images from AutoEnginuity . make not of idle and 2000rpms bank 2 is running 300F cooler Quote Link to comment Share on other sites More sharing options...
Lexus Owners Club Posted April 26, 2021 Share Posted April 26, 2021 It looks like there may be air leaks in the exhaust system causing excess oxygen levels before the cats/lambda's Best way to prove/eliminate this is to measure the oxygen levels in the exhaust gases....should be as close to zero reading at idle/cruise Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.