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Re: Code p0420
Ouch. I just got a new cat with that code under the federal emissions warranty, which goes to 80,000 miles. So you just missed that.
The cats just burn out after a while, and our smart friends at Subaru (and most other car makers, too) made them just good enough to get past the mark.
When it's cool, reach under and bang on it and see if there's anything rattling in the pipes. When they go bad, the guts degrade and flow downstream.
How's your gas mileage?
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Hierarchy of Subaru:
Brat > Coupes > Wagons > Sedans > Baja
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