1997 Explorer XLT V6 4.0 PO401/2

- M
- Mike O
  
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posted
19 years ago

Wed, Sep 29, 2004 1:03 AM

I pulled a PO401 code from the OBD system; replaced the EVR Solenoid; now I get a PO402 code. The dpfe was replaced by the dealer about two years ago. Any suggestions?

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- S
- Searcher
  
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posted
19 years ago

Wed, Sep 29, 2004 1:59 AM

PO 402 = exhaust gas recirculation flow excessive detected

- C
- Chief_Wiggum
  
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posted
19 years ago

Wed, Sep 29, 2004 8:48 PM

Well, there are several things that can set that code, (including the DPFE) . I would start by pulling the EGR valve off and cleaning out all the coking that's likely in there..

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- Judester4
  
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posted
19 years ago

Thu, Sep 30, 2004 12:32 AM

what are the other options if the egr is new and cleaned out airways?

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- Mike O
  
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posted
19 years ago

Tue, Oct 5, 2004 10:16 PM

Thanks for the input. I replaced the dpfe sensor and the the problem was fixed; no more codes. The warranty on the dealer part was 12 months; big deal! The casing for the replacement dpfe (from NAPA) was made of plastic whereas the changed out part had a metal casing. Has anyone else experienced the same situation?

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