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Originally Posted by kzuby
Yeah, the code was 0401. I decided to relace the valve and gasket. Idles perfect. Now what is a DPFE sensor and how much does it cost? Is that the only way to clear that code?
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Oh interesting. EGR valves don't fail terribly often on these cars. Well, if the EGR valve fixed it then I would recommend driving for a week or so and see if the CEL goes away. If not, the DPFE sensor I think is around $80 +/- from the Ford dealer and measures the pressure difference on both sides of the EGR valve. They break a LOT, but if yours is good then if the EGR valve fixed it, the CEL should go away after several driving cycles.