Thread: 2001 C240 has OBDI code P0173
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Old 03-18-2011, 12:48 PM
mslc791 mslc791 is offline
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Join Date: Jul 2004
Posts: 121
I checked the pressure it seems to be not quite 55 but fluctuating and below 55, So I don't know if the pump or mass air sensor are causint the CEL?
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