E-Class (W211) 2003-2009

Another odd issue - p0446 / aka: p2012-02

Old Aug 23, 2023 | 05:19 PM
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2014 SL550, 2014 GL350, 2002 CLK430 Cabriolet
Another odd issue - p0446 / aka: p2012-02

This is posted on the "other" MB site as well.

2004 E320 Wagon. I keep getting this code with every fill-up. It will make an appearance once fuel level has dropped to 1/2 tank mostly every time. If I clear it, it will stay away until the next fill-up and come on again after the drop to 1/2 tank. No other codes, no driveability issues. Replaced all of the common suspects: purge control valve, charcoal filter and shut off valve with used parts from my personal collection. No difference. I know that this can be a tough one to resolve. Just wondering if anyone has any thoughts.


Thanks.
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Old Aug 23, 2023 | 06:39 PM
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https://mbworld.org/forums/e-class-w...ml#post8020220
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Old Aug 23, 2023 | 07:06 PM
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Thanks. I swapped in another canister with shutoff valve that was allegedly a good used unit. Didn't make any difference.
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