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Old 05-15-2006, 15:42   #1 (permalink)
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engine light for 2002 xls

well a friend of mine has a meter for codes..
my engine light came on
code is po401 egr valve,,insuffiecent flow detected
so bought a new egr valve with gasket from the dealer and installed and cleared the code....
couple of days later , engine ligfht is back...
next step?

thanks
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Old 06-14-2006, 18:47   #2 (permalink)
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Re: engine light for 2002 xls

It was not a problem with the EGR valve. It was a code for the DPFE sensor. Very common part to fail causing that code. Ford even extended the warranty on "Tube mounted" DPFE sensors an additional 2 years/24,000 miles beyond factory for free replacement.
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