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Q: Problem: check engine light staying on? on 2002 Ford Explorer

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Diagnostic code: po4o1
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Google " p0401 Ford Explorer 4.6" there is a youtube video and the two links below that as well have good information.
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Hello it seems as if you have a fault in the differrential pressure feedback egr sensor that is causing the fault code p0401.I say change the DPFE sensor and then recheck the sensor voltage ref.HAVE A BLESS DAY from DR.RECO.
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