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Old 02-05-2013, 12:30 AM   #1
Andrews-bad-SE
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Join Date: Jun 2012
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Location: O'fallon, MO
What I Drive: 2003 Arizona Beige SE 4dr Zetec/ATX

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EGR Insufficient Flow. Tried searching already.

Car: 2003 Zetec, Automatic
Issue: p0401 code (EGR Insufficient Flow)

After a long time of plucking at this...

I've tried cleaning the valve. It's spotless. I replaced the tube, absolutely free/clear of any buildup. I checked for leaks, none whatsoever. I replaced the DPFE sensor. Could this be it? I got a BWD from Advance Auto Parts when I worked there... Could this be it? I've heard that Foci are pretty picky when it comes to sensors... As far as O2's are concerned, I use strictly NTK's. Could the DPFE be just as "choosy"?


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