P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > USENET NewsGroups > alt.autos.ford
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 07-05-2005, 02:01   #1 (permalink)
Father Guido
Guest
 
Posts: n/a
P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

I got the above code on my 99 Taurus, does it mean the EGR valve is
clogged and needs replacing. Or isn't it quite that simple?

Comments welcome. Here's the rest of the codes involved with the
Exhaust Gas Recirculation...

P0400 -- Exhaust Gas Recirculation Flow Malfunction
P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected
P0402 -- Exhaust Gas Recirculation Flow Excessive Detected
P0403 -- Exhaust Gas Recirculation Flow Circuit Malfunction
P0404 -- Exhaust Gas Recirculation Flow Circuit Range/Performance
P0405 -- Exhaust Gas Recirculation Flow Sensor A Circuit Low
P0406 -- Exhaust Gas Recirculation Flow Sensor A Circuit High
P0407 -- Exhaust Gas Recirculation Flow Sensor B Circuit Low
P0408 -- Exhaust Gas Recirculation Flow Sensor B Circuit High
P0409 -- Exhaust Gas Recirculation Flow Sensor "A" Circuit

Thanks,

Norm

PS I reset this code for the moment. Three weeks ago I had an O2
sensor code (P1131), which I also reset, and so far (knock on wood)
it hasn't returned or even been pending yet.
  Reply With Quote
Sponsored Links
Advertisement
 
Old 07-05-2005, 06:01   #2 (permalink)
Backyard Mechanic
Guest
 
Posts: n/a
Re: P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

Probably needs cleaning at the least. This includes the ENTIRE system..
from exhaust to intake egr port

Father Guido <FG@SNL.com> wrote in
news:55vjc1lq1002lrgsv5469sh1kk6ouftcur@4ax.com:

> I got the above code on my 99 Taurus, does it mean the EGR valve is
> clogged and needs replacing. Or isn't it quite that simple?
>
> Comments welcome. Here's the rest of the codes involved with the
> Exhaust Gas Recirculation...
>
> P0400 -- Exhaust Gas Recirculation Flow Malfunction
> P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected
> P0402 -- Exhaust Gas Recirculation Flow Excessive Detected
> P0403 -- Exhaust Gas Recirculation Flow Circuit Malfunction
> P0404 -- Exhaust Gas Recirculation Flow Circuit Range/Performance
> P0405 -- Exhaust Gas Recirculation Flow Sensor A Circuit Low
> P0406 -- Exhaust Gas Recirculation Flow Sensor A Circuit High
> P0407 -- Exhaust Gas Recirculation Flow Sensor B Circuit Low
> P0408 -- Exhaust Gas Recirculation Flow Sensor B Circuit High
> P0409 -- Exhaust Gas Recirculation Flow Sensor "A" Circuit
>
> Thanks,
>
> Norm
>
> PS I reset this code for the moment. Three weeks ago I had an O2
> sensor code (P1131), which I also reset, and so far (knock on wood)
> it hasn't returned or even been pending yet.
>


  Reply With Quote
Old 07-05-2005, 10:02   #3 (permalink)
lugnut
Guest
 
Posts: n/a
Re: P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

On Tue, 05 Jul 2005 03:26:50 GMT, Father Guido <FG@SNL.com>
wrote:

>I got the above code on my 99 Taurus, does it mean the EGR valve is
>clogged and needs replacing. Or isn't it quite that simple?
>
>Comments welcome. Here's the rest of the codes involved with the
>Exhaust Gas Recirculation...
>
>P0400 -- Exhaust Gas Recirculation Flow Malfunction
>P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected
>P0402 -- Exhaust Gas Recirculation Flow Excessive Detected
>P0403 -- Exhaust Gas Recirculation Flow Circuit Malfunction
>P0404 -- Exhaust Gas Recirculation Flow Circuit Range/Performance
>P0405 -- Exhaust Gas Recirculation Flow Sensor A Circuit Low
>P0406 -- Exhaust Gas Recirculation Flow Sensor A Circuit High
>P0407 -- Exhaust Gas Recirculation Flow Sensor B Circuit Low
>P0408 -- Exhaust Gas Recirculation Flow Sensor B Circuit High
>P0409 -- Exhaust Gas Recirculation Flow Sensor "A" Circuit
>
>Thanks,
>
>Norm
>
>PS I reset this code for the moment. Three weeks ago I had an O2
>sensor code (P1131), which I also reset, and so far (knock on wood)
>it hasn't returned or even been pending yet.



The most common problem with those is the DPFE sensor which
may give several of your codes.

Lugnut
  Reply With Quote
Old 07-05-2005, 10:02   #4 (permalink)
sleepdog@optonline.net
Guest
 
Posts: n/a
Re: P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

There was a major recall on the DPFE sensor for many Ford & Mercury
models 2000 and above, not sure if any 99 model years were covered. I
would suspect the DPFE, had it happen to my wife's 2000 Taurus wagon
twice. First was replaced under recall, second I had to do. Part
costs about $30 and takes five minutes to replace on the Taurus. Small
hands help because it is located between the firewall and the engine,
at least it is on the DOHC Duratec.

You might be able to tell if the sensor is bad by checking the DPFEGR
pin on the sensor. Remove the wire harness from the sensor. Looking
at the pins locate the top or left pin (depending on your engine it
might be different). With the key on and engine off check the voltage
to that pin. From what I am reading if it is between 4 and 6 volts the
sensor is bad.

I say "might" because I've never actually performed this test. This I
got from interpreting one of the pin-point tests I have for my 2000
Taurus DOHC. However, if I am in error you count on someone spotting
it and offering additional advice and maybe even a few choice words for
general entertainment.

  Reply With Quote
Old 07-05-2005, 20:01   #5 (permalink)
Jimbo
Guest
 
Posts: n/a
Re: P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

P0401 almost always seems to require a DPFE sensor replacement. It
worked for mine a few months back. Replacing it also, IMO, removed the
"jerkiness" from the engine on acceleration.

  Reply With Quote
Old 07-05-2005, 23:01   #6 (permalink)
Father Guido
Guest
 
Posts: n/a
Re: P0401 -- Exhaust Gas Recirculation Flow Insufficient Detected <<< what does this mean?

Thanks everybody for your thoughts and ideas!

Norm
  Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Fordforums Community > USENET NewsGroups > alt.autos.ford



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are Off
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 00:45.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.