Still have a 420 code insuficent converter. Please advise
Toyota Q&AAsk Your Question
2001 Toyota Camry Question: I had a 420 code replaced cat and both o2 sensors. Put over 200 miles on it.
Answer #1G. T. Service Center (4244 Answers) , Stephenville, TX - (254) 638-3236ProfessorG February 26, 2014, 18:54Master
Run scan data to determine the operating function of the fuel trim, and correct it.
ReplyPARTS GUY, February 27, 2014, 05:44Master
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.
Replybikebandit, February 28, 2014, 19:26Rookie
Thanks for the info I bought it online , the cheapest one I could find. Not a good idea
Answer #2cardocIII from Gillespie's Auto Service, February 26, 2014, 20:36Master
Where did you get the catalyst, and was it CARB OBDII approved?
Replybikebandit, February 28, 2014, 19:24Rookie
I bought it online from from auto warehouse the cheapest one not a good idea. Thanks