EGR problem
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New User
Joined: Jan 2006
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EGR problem
How about this. New guy, and 2 questions already.
I am working on a '00 Mazda B2500, 2.5 5 speed with about 65K miles on it. The SES light was on. I pulled the codes and got 2 codes. One was a P0401, the other a P0402. These are both EGR related codes. One is for excessive flow of the EGR, the other is a restricted flow for the EGR. How does one acheive restricted and excessive flow at the same time?
I did pull the EGR, and the tube and checked to make sure they weren't clogged up. I know Ford's are notorious for this. Both looked good, and the EGR did not appear to be sticking.
What should I check?
I am working on a '00 Mazda B2500, 2.5 5 speed with about 65K miles on it. The SES light was on. I pulled the codes and got 2 codes. One was a P0401, the other a P0402. These are both EGR related codes. One is for excessive flow of the EGR, the other is a restricted flow for the EGR. How does one acheive restricted and excessive flow at the same time?
I did pull the EGR, and the tube and checked to make sure they weren't clogged up. I know Ford's are notorious for this. Both looked good, and the EGR did not appear to be sticking.
What should I check?
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
Welcome to FTE!
I'd be thinking a bad DPFE sensor first, then possibly a bad EVR.
Reference: The Ford DPFE/EGR System
I'd be thinking a bad DPFE sensor first, then possibly a bad EVR.
Reference: The Ford DPFE/EGR System
