Recently my engine lights was on, on my OBDII showed it is a p0420 and p0430 code referring to a catalyst system problem on bank 1 and 2.
I got it cleared and drove it for a bit and it passed on a smog check, but after a week of driving the engine light went back on!
I just noticed that everytime i use my AC that is the only time that my idle start getting rough, so my question is does it really affect that use of an AC? I just want to know if I really need to go to the expensive rapair like changing cats or replacing my 4 o2 sensors? Any idea to go on a low budget repair first?