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Thread: OBD ll Code P420 @ for 2000 TA
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06-05-2007, 02:43 PM #1
OBD ll Code P0420 @ for 2000 TA
Have a SES light on and showing P0420 which reads DTC P0420 "Catalyst System Low Efficiency Bank One"
Is this the O2 sensor or the cat itself or something alltogether different.
Was Going to gut the cats one day but if it is failing I will just gut them now,unless the previous owner did it for me.
The car runs pretty well but sometimes chugs when I give it about half throttle.
Any ideas?
Thanks
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06-05-2007, 03:00 PM #2
- Join Date
- Jul 2005
- Location
- Jacksonville, FL
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- 2,723
P0420 is usually the cat - GM just extended the warranty on them for the 00-02 cars to 10 yrs/120K.
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06-05-2007, 03:27 PM #3
so the cat is covered by warrenty then?
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06-05-2007, 03:42 PM #4
- Join Date
- Jul 2005
- Location
- Jacksonville, FL
- Posts
- 2,723
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06-05-2007, 03:45 PM #5
That kicks ass but your link is broken or something.Tells me hotlink not avail.
Shows this picture
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06-05-2007, 03:59 PM #6
- Join Date
- Jul 2005
- Location
- Jacksonville, FL
- Posts
- 2,723
Hmmm....just clicked on it and works for me? Someone else will click on it and see if it works - not my link, just reposted it.
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06-05-2007, 04:12 PM #7
Did the same thing for me-didn't work.........
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06-05-2007, 04:13 PM #8
Glad it not just me
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06-05-2007, 06:20 PM #9
My 01 WS6 did the same thing last month. I took it to the dealer and they put a new cat and o2 sensor on it under warrenty. But I had 64,??? miles and now just over 65,??? miles.
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06-05-2007, 06:36 PM #10
well according to the poster above the warrenty covers up to 120k so I may be ok.Just hit 100k 2 days ago so I hope he is right.
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