I have a 2007 Toyota Camry with a 2.4 l engine with 228000 miles on her . I just installed both catalytic converters the main one manifold on the top of the engine and below with two new oxygen sensors the question is my check engine light came on and I read the code and it says catalytic insignificant or not efficient. But the car runs great now is not clogged up. The check engine light randomly come on and off before I replace the catalytic and I did change my battery before I replace the catalytic somebody told me to put some miles on the car maybe 50 miles and we'll go away?
What are the exact codes? Can you please post them all here?
Do you have any warranty on the catalytic converters?
I should I brought it from AutoZone
That's good. Have them change under warranty
Why have them exchanged when I just had them installed yesterday?
Because maybe you got sold a bad cat/s.
Also, did you use OEM oxygen sensors?
https://www.engine-codes.com/p0420_toyota.html
I used OEM oxygen sensor for the upstream cat which I always think it was very important to use and
A aftermarket for the downstream cat but there's no codes coming up that the oxygen sensors are bad ? Plus I just paid my mechanic $400 to install new parts now I have to pay him another $400 to uninstall and another $400 to reinstall the warranty parts I'm assuming both Cadillacs is it worth it ? It passed inspection at the time I install the new part so I'm good for a year do you think that the warranty will cover the labor also to install and reinstall if it's supposed to be bad Cadillac converters? Scotty please help me ? Both Cadillac converters say I do have a 5-year limited warranty for a 90-day warranty also. I brought it from AutoZone and I am from upstate New York. Help me Scotty.!!! Me and my wife learned so much on your videos.
You will probably find that the warranty on over-the-counter Autozone catalytic converters only covers the part itself, not labor. (If the mechanic had provided the parts he would have guaranteed the entire job. That's a drawback of bringing your own parts to a mechanic.)
Check connections on the downstream sensors to make sure nothing has come loose. Assuming wiring is OK it's probably worth installing OEM downstream O2 sensors to see if that clears up the problem. Although they are less finicky than the upstream ones, some cars are just very sensitive to what sensors are used.