P0420 and P0440
P0420 and P0440
ok so i have a P0420 and P0440 codes on my 1996 4dr blazer. i'v already tryed the gas cap replacement and thats not it. some people say the purge valve so im going to look at that. there isnt a rattle in my convertor and someone else said it may be a sensor then? anyone got any ideas or hints/tips?
BF Guru
Joined: Oct 2010
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From: Summit Ny
https://blazerforum.com/forum/diagno...plained-19820/
https://blazerforum.com/forum/diagno...plained-35145/
these will help Search is your friend =)
https://blazerforum.com/forum/diagno...plained-35145/
these will help Search is your friend =)
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