killer924007

code p0420& p0430.if my catalyst is not function..if i still drive it ,will it cus any problem? cus my car still running smooth with no crap sounds...anybody know?

and how come my 2 pre-cat dead together?? i saw a lots of ppl only got one code..mine got 2.. is it related to the coils failed before?? and the oils get into the catalyst?

† ErV †

Depends on what's wrong with it. Ideally you either want to fix it, or remove it/gut it.