code p0173 / trim malfunctio bank 2 - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 07-14-2010, 09:23 AM Thread Starter
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Smile code p0173 / trim malfunctio bank 2

my 2002 sl500 silver arrow with 39000 mi is showing these codes ever since coming out of winter storage.after clearing codes and trying tekron cleaner the codes will stay off for weeks then return.the car runs super with no apparent problem. any thoughts/or solutions for this prior going bk to dealer ??

Last edited by jbedros1; 07-14-2010 at 09:46 AM. Reason: incorrect milage
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post #2 of 3 (permalink) Old 07-14-2010, 10:59 AM
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Checl your air cleaner and make sure there are no cracks in the "ducts" that go from the air cleaner housing to the mass air flow sensor. If you got both P0170 and P0173, I would say clean the MAF.

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post #3 of 3 (permalink) Old 07-14-2010, 11:31 AM
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Better yet, replace the MAF as "dirty" isn't the most common failure.

Kent Christensen
'07 GL320CDI
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