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Went to autozone because my service engine light came on . Just changed oil 500 miles ago , had them read codes p0171,p0174, comes back to mass air flow sensor are some thing . Any info on how to clean it are what to do thanks
 

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Those codes a generic in nature and it's just saying that by the time the airflow reached the 02 sensors it failed normal parameters being monitored.

It could be a dirty MAF sensor, dirty air cleaner, bad 02 sensor(s)"unlikely! And the list goes on.....

You can start by cleaning you MAF sensor and clear your codes and see what happens.

I got those same codes on my 06 GT and mine was a bad air filter.

Hers a link for you on the MAF.

How to clean a MAF on a Mustang
 
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