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Old 08-12-2014, 03:37 PM   #1
wordyahurdd
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P0420 issue (yes I searched)

I have a CFM HFC with a 02 cheater on my car (been on for 3+ years) and recently the P0420 light has been popping on occasionally and I'm unsure why.

The car runs smooth and the light has never came on in the past (except recently) so I am confused whats going on here.


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Old 08-12-2014, 03:54 PM   #2
freemind
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P0420 is the Cat. The best way to know IMHO is to remove it and inspect it. turn it upside down and lightly shake it. If any metal particles come out of it, it's bad.
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