My 01 IS300 CEL came on couple of weeks ago code P0430 Catalyst Eff. below threshold Bank 2.
We thought it was the Catalytic so replaced it but after 300 miles or so same code came back on.
Any help will be appreciated. Thanx.
Full Version: Cel Code P0430
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02 sensor needs to be replaced. Make sure you get the Denso's and not Bosch. They aren't to hard to replace. Costs around 60 bucks. Alot more if you have a tech do it for you.
QUOTE (smooth1 @ Aug 6 2009, 09:18 AM) 
02 sensor needs to be replaced. Make sure you get the Denso's and not Bosch. They aren't to hard to replace. Costs around 60 bucks. Alot more if you have a tech do it for you.
Please tell me which one is 02 sensor. Thank you for all the help.
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