1998 Ford Expedition Q&A

1998 Ford Expedition Question: P0401 code

check eng. light comes on. Changed DPFE, EGR, Idil air control and light still comes on. Pressley.Rick@yahoo.com -
Answer 1
egr ports are stoped up in the intake manifold will need to be cleaned out -
Answer 2
This could be a DPFE sensor failure too. Cheap and easy repair, at the side of the inake, two hoses and a mounting. -
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