Thanks for the response, towvan. Unfortunately, though I ended up purchasing and installing the correct DPFE, my 0401 code came back on. I will now move to the rest of the EGR system and do some serious carb-cleaning. My '99 has 163K miles on it, so I'm sure it just needs to be cleared out. The good news is that the sensor install took all of about five minutes to complete, so if there's anyone out there showing any hesitation, please know that it's extremely easy to perform. I'm an absolute amateur when it comes to auto repair, and even *I* could do it.
My 95 ford explorer check engine light came on, I ran the codes and got code 327, which says EGR Valve Transducer/position sensor circuit below minumum voltage, I replaced the sensor and replaced the vacume hoses as well, ren codes and got code 111 which means everthing passed. No more check engine light for about 8 days then check engine light again...ran codes and got 337 this time which is sensor circuit voltage is above minimum voltage, went back to autozone got another dpfe, everythinh worked great for about 2 weeks then same thing..got code 327 again...this has went on for 4 dpfe sensors now another sensor is bad # 5..all these sensors are from auto zone not from Ford...One mechanic on line told me it has to be the dpfe...said that I need to get Factory Ford DPFE sensor and this will probably solve my problem..The auto zone sensors were all under a warranty and cost 59 bucks compared to Fords 180 buck sensor but doesn't really matter if they all are failing. I just do not want to get Factory part and pay 180 for it and have the same problem, auto zone replaced all the sensors no questions asked but I am sure Ford will not be so kind if I huy it and 2 weeks later it goes bad..Is there anything else that could cause the sensor to go bad...One thing that puzzles me is that every time I replace the sensor it solves the problem but only short term..I just thought it would be very rare to have 5 sensors go bad even if they are not from Ford..One other thing is when the engine light comes on it will stay on untill I turn the engine off, I can turn it off and right back on and it will take the light a few minuts to come back on.
I appreciate any advice and input any one can give me on this problem. As I say I don't mind going to Ford and getting the sensor if I am sure all these generic sensors went bad on their own
I was in the same boat, replaced the entire EGR system starting with the DPFE from Autozone for the same reason you did, 60 bucks to 160 bucks. When I finally realized I was spending more in time than the hundred bucks I figured I would try the factory one, when I did the problem I had been fighting for months went away....bite the bullet and get the Ford part.
towvan..yepper I think you are right..I just called the Ford dealer out here in Las Vegas....They are proud of that dpfe they want 185 fot it, but what you supposed to do..if ya need it ya need it..bad part out here in you can not get your vehicle smogged if the check engine light is on and with out smog you can't get tags so they got ya by the shorts
i have a 1997 ford f150 4x4 4.6 with 170,000 miles got the p0401 replaced the dpfe with the ford motorcraft one those lines are slear cleaned the egr ports were all clogged up still the ses light comes on i dont know where else to look or test any help i appreciate need to smog it next week thank you also its a 5 speed also ran seafoam threw it with very little smoke
Last edited by bobbyboy545; 11-20-2009 at 04:41 PM.
Reason: more info
examine then if there brittle or damaged definitely change them goo dluck hopefully u dont run into my problem cleaned the ports changed the sensor with oem 145$ ford dpfe still have p0401 good luck let us know what u come across
The DPFE sensor I replaced in Oct.of this year on my 01 F150 with the 4.6L,was $76.40.Kinda sounds like your Dealer working on a little higher profit scale than my local dealer.
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nevermind found it fixed it. hose nipple was broken off replaced senser and both hoses
