Mcon

iTrader: (1)

A month ago on my dash 3 lights pop out. Check engine, VSC and VSC Off. I go to Auto Zone and the guy told me that is code P0430. I check here on the website and a lot of you guys said, check a leak on the exhaust system or the 2 sensors. I go to my muffler shop and he not found any leak on the system. I buy any way all the OE exhaust gaskets including the 2 that go to the muffler. The guy on the shop installed for me. I clean the code and 2 days later the lights show up again. I buy the 2 new O2 Sensors I installed, clean the code and yesterday 2 day later after installing the sensors the light show up again :'(. I come back to the muffler guy and he check again all the system and also told me that if was the bad cat, smell very, very bad, but not smell bad at all and also he told me that the cats look new. My car is 2005 and have only 82, xxxx miles and I don't know what I need to do after this point. Guys, my question is, any idea that I can throbleshooting something else before go to my next step and that step is, buy the exhaust system. Also, if I had to buy it, which one is the best or are website that I can buy. Appreciate any help.
Thank you.

Debonair

P0430 is the only code you are getting from the engine system?

Mcon

iTrader: (1)

Well also the scanner say coil piston 3 miss fire. I changed all 3 coils, spark plugs cables and spark plugs. All OE from the dealer to make sure no have that code again. That code go away but still P0430. I hate see that 3 lights on my dash ON. Also, I see that my miles go less now. I aways tracking my miles to see if the car work as normal. But now it doesn't. When my car was fine giving me 360 o plus miles for full tank. Now just 300 miles or 320 as much. No happy at all :'(