2002 Ford Explorer Q&A
2002 Ford Explorer Question: Problem: check engine light staying on?
Diagnostic code: po4o1 - Visitor
Google " p0401 Ford Explorer 4.6" there is a youtube video and the two links below that as well have good information. - patrick mannion
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. - DR.RECO
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