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Mass air flow sensor

Old Apr 6, 2009 | 10:39 AM
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IKE
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Default Mass air flow sensor

I have a check engine code po173, which i think is a mass air fow sensor.
Po173 say fuel trim malifuction bank two (2).
What is the two for , i know 1 means right side and two left side of engine, but on a mass air flow ,i thought it such one sensor.

Has any one had this problem?
Thanks for any help.
 
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