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P0420 code, Much needed help!!

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Old 15 Oct 2012, 04:31 pm
Fresh Cruiser
Join Date: Oct 2012
Location: San antonio, Texas
Posts: 6
Unhappy P0420 code, Much needed help!!

I have a 2006 touring edition PT cruiser with 108,000. My check engine light came on and I took it into orileys and the "P0420" code came up. I took it to get a diagnostic test and they gave me a huge list of things that need attending but that my main cause was the P0420 code. I've had the car for a month and I donít know what has/hasnít been changed. I also have no dealership warranty. So I feel like this is going to be expensive. I'm already overwhelmed. :|

I have been reading up on it and from what I understand itís pretty much my catalytic converter needs to be replaced or itís my 02 oxygen sensor. I want to know how can I tell which needs to be replaced? I have a muffler shop looking at it as we speak. I donít want to be taken for a fool. I understand more than likely they will say I need my whole catalytic converter replaced because itís the more expensive of the two.

Also, I have been experiencing problems when I'm idling. The car shakes and does like a "jump". When it does that my A/C gets hot. Once I resume driving my A/C gets cold again. The check engine light has never come on before until last week so I stopped driving it and took it in to get looked at.
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Old 15 Oct 2012, 04:45 pm
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Join Date: Sep 2001
Posts: 27,758
Default Re: P0420 code, Much needed help!!

Something to read....

P0420--Cat efficiency low bank 1?
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