2001 Toyota Camry Q&A

2001 Toyota Camry Question: I had a 420 code replaced cat and both o2 sensors. Put over 200 miles on it.

Still have a 420 code insuficent converter. Please advise -
Answer 1
Run scan data to determine the operating function of the fuel trim, and correct it. -
Comment 1
A P0420 has nothing to do with fuel trim. The wonderful USA government mandated that the manufactures have to monitor the cat efficiently. I think cardoclll is correct, you don't have the proper cat on. -
Comment 2
Thanks for the info I bought it online , the cheapest one I could find. Not a good idea -
Answer 2
Where did you get the catalyst, and was it CARB OBDII approved? -
Comment 1
I bought it online from from auto warehouse the cheapest one not a good idea. Thanks -