2001 Toyota Solara Q&A

2001 Toyota Solara Question: i have this code on my what can i do??

okay so i been having this code for a while i change the cat the sensors and some other parts im spending a lot of money changing parts i went to 4 diffrent repair shops. and the said its the same code their dont know what else to do help -
Answer 1
What code? -
Comment 1
p0420 that code -
Comment 2
Where did the replacement parts come from? Especially the cat. -
Answer 2
If the cat is not defective or one last test could be to confirm is no false/unmetered air within the exhaust system. Best bet to have a qualified service center perform a smoke leak test while vehicle exhaust system cold. Good luck. -
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