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Q: codes problem shooting on 2005 Ford Five Hundred

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i got codes for p0109 p0191 p0171 they all point to something with the air intake what would be the first thing to check?
(5) Answers
the large hose from the air filter to the intake has a couple of small hoses that come out from it. make sure they are all secure and tight. the 171 is a vaccum leak code for trims.
Roy
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