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on a obd II p0420 trouble code would a leaking exhaust pipe after the converter and oxygen sensor cause this code to come up?
thank you for your time.
thank you for your time.
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Hey, I have had this code come up in cars before, and it usually means the oxygen sensor or catalytic converter, I would suggest checking your oxygen sensor. I don't think a leaking exhaust afterwards would cause it. Probably a good idea to fix that leak though!
-1989 festiva auto to standard conversion, bp g5mr white, aspire swap- October 2010 Festiva of the Month
-1993 festiva stock standard blue, kia rio front struts -
how far after the converter? check to see if the rear O2 is still swinging and that should point you to the part that is bad. RECOMENDATION: if you replace the cat, replace the rear O2 as well.Trees aren't kind to me...
currently: 2 88Ls (Scrappy and Jersey), 88LX, 90L(Pepe), 91L, 91GL (Skippy) 93 GL Sport (the Mighty Favakk), 94 (Bruce) & 95 Aspire SEs, 97 Aspire (The Joker),
94 Justy 4WD, 87 Fiero GT, plus 2 parts cars. That's my fleet.
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