CEL P0420 what can cause this problem?
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Joined: Oct 2005
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CEL P0420 what can cause this problem?
Just got a CEL:
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
how can this happen? How can it be fixed?
mods:
I got AEM V! intake system. Just changed the filter 2 months ago.
and thats it. no other modification
Milage is about 111,000.
need advise! Thanks!
-Mike
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
how can this happen? How can it be fixed?
mods:
I got AEM V! intake system. Just changed the filter 2 months ago.
and thats it. no other modification
Milage is about 111,000.
need advise! Thanks!
-Mike
Joined: Dec 2001
Posts: 11,399
Likes: 19
At 111K, it looks like it is time to change your CAT. They don't last forever. I got a P0420 just this week. I have far less miles on my car, but it has seen a few things would I am sure would shorten it's life.
Watch the FS forum for a used cat. They are fairly easy to change your self. Just 5 nuts and you are done.
Watch the FS forum for a used cat. They are fairly easy to change your self. Just 5 nuts and you are done.
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KenGPW
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Jun 5, 2004 12:57 PM