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what does a p0420 code mean?

Old Mar 25, 2004 | 05:30 AM
  #1  
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what does a p0420 code mean?

i just came back from autozone to get a code pulled b/c my SES light came on yesterday. i got a p0420 code. what does this mean? what can i do about it so that i won't have to take it to a mechanic? any help would be appreciated...
Old Mar 25, 2004 | 09:19 AM
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This is a code for the precat. So its going to be either bad gas, bad precat, or bad o2.

Dixit
Old Mar 25, 2004 | 02:18 PM
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It means your car has a chronic problem.
Old Mar 25, 2004 | 02:19 PM
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Originally Posted by SR20DEN
It means your car has a chronic problem.
That too.

Dixit
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