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Old 10-25-2016, 07:42 PM   #1
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Error Code, Need Help!

Hi All,

The check engine light in my 99 Porsche Boxster (2.5L) came on two days ago and I went to my local Autozone to get the error code log (see picture below).


The three codes don't really make sense in combination if you ask me...
Has anyone seen those codes and know how to fix them?
My initial guess would be something with the fuel system evaporation, possibly a leaking gas cap...? I also don't think that both O2 sensors would go at the same time...

Any help would be appreciated at this point.

Thanks,
Mario
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Old 10-25-2016, 08:14 PM   #2
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look for something common to both sides....vacuum leak, MAF etc.
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Old 10-25-2016, 10:00 PM   #3
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Get yourself a ELM327 and download the app.....will tell you more than any Auto-zone....you might be out $20 total
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Old 10-26-2016, 02:10 AM   #4
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I had the P0446 code and some O2 sensor codes. It ended up being a plugged charcoal canister although my O2 sensor codes were different. A blocked purge valve will show these kind of codes as well.

Last edited by tommy583; 10-26-2016 at 02:14 AM.
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Old 10-26-2016, 07:38 PM   #5
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P0446: Purge line is blocked or nearly blocked to the EVAP canister

Check gas cap seal.

Check purge line and control valve for carbon build up.

Clear codes and see if O2 sensor codes return.
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