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From: Jeff Strickland on 15 May 2010 17:37 "jim" <"sjedgingN0Sp"@m(a)mwt,net> wrote in message news:9tqdnSdsatigMHPWnZ2dnUVZ_v6dnZ2d(a)bright.net... > > > Jeff Strickland wrote: > >> Bottom line is, >> you either have a bad CAT or a bad sensor. > > Not necessarily. Exhaust leaks and corroded electrical connection are > also possible causes of P0420 DTC. > Yeah, sure. Out here in California, we don't have much trouble with stuff corroding, but we all know it happens. Seems to me that one would hear an exhaust leak large enough to cause a code that says the CAT was bad.
From: jim on 15 May 2010 20:00
Jeff Strickland wrote: > "jim" <"sjedgingN0Sp"@m(a)mwt,net> wrote in message > news:9tqdnSdsatigMHPWnZ2dnUVZ_v6dnZ2d(a)bright.net... > > > > > > Jeff Strickland wrote: > > > >> Bottom line is, > >> you either have a bad CAT or a bad sensor. > > > > Not necessarily. Exhaust leaks and corroded electrical connection are > > also possible causes of P0420 DTC. > > > > Yeah, sure. Out here in California, we don't have much trouble with stuff > corroding, but we all know it happens. Maybe he's not in Cal. > > > Seems to me that one would hear an exhaust leak large enough to cause a code > that says the CAT was bad. I have no way of knowing if he hears an exhaust leak or not. A small leak in the right location would be enough. -jim |