Question about Ford Expedition

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Dpfe going bad - Expedition Ford Cars & Trucks

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If you have a code for the DPFE test it

If it fails some type of testing, replace

You will need an emissions manual for the specs
or ask a repair shop

Posted on Mar 18, 2011


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I am working on a 2005 ford escape v6. Will a bad dpfe sensor or bad up stream hoses from the dpfe not allow the car to get over 2000 rpm.

Yes it can b a factor....ignition tune and throttlbody probs also. Du u hav a shop manual....napa or zone

Sep 22, 2015 | Ford Cars & Trucks

1 Answer

1405/405 error code for ford ranger 1996

P1405 is an EGR code this can be caused by a bad EGR valve and vaccum selonoid and or a bad DPFE sensor and blocked or melted hoses going to the DPFE.I usally remove the EGR Valve and using a hand held vaccum pump ck the Valve to see if it opens correctly if it is then ck the DPFE hoses if they are ok . Now if the EGR valve is bad You need to replace the DPFE and the Selonoid and the valve because the Valve not working burns them up internally. If the Valve is good first replace the selonoid ... its the cheapiest .... if that doesn't fix it replace the DPFE and the hoses going to it . If you know some one with a good Scan tool it may have a EGR self test prcedure built in like mine does and makes this easier but if not i have told you how with out a scanner

Aug 05, 2012 | Ford Cars & Trucks

1 Answer

Code p0401 i replaced egr tested omhs@voltage on all related parts @reset code still comes on ?

What have you replaced the EGR valve or the DPFE sensor. The valve usually never goes bad it is usually the DPFE sensor that is bad or the ports in the intake elbow that the valve is bolted to are plugged. If the DPFE tests good pull the elbow and clean the ports. Do you have a vacuum pump?

Dec 10, 2010 | 2000 Ford F150 Flareside SuperCab

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The error code P1401 comes up on my Ford Taurus SE 2002. Can you tell me what it stands for and how to fix the problem?


Your DPFE is no good hate to say but probably was your proplem the whole time none of the other parts not needed except the fuel filter and pcv good PM stuff there. The DPFE is either going to be a silver or black box around where the egr valve is. be sure not to get the hoses crossed when putting it back on.

Keep us updated.

Dec 08, 2010 | 2002 Ford Taurus

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I have a 1997 Mercury Villager which has a obd code of P400. I changed the egr valve but the code returns. Could the problem be something different or could the valve be defective.

without having a scanner in front of me(i have one at work and also snap-on shopkey) i work on alot of ford cars and usually the egr is not the problem-the DPFE SENSOR usually is. they are known to go bad on fords and sometimes the replacement part is an "updated" part which fixes the problem.the DPFE is a square or rectangular black plastic piece with one electrical plug and 2 vacuum hoses attached to it.the 2 hoses connect to a metal pipe that will be attached to the exhaust manifold.the DPFE controls the EGR valve.also make sure the 2 hoses are not cracked or disconnected.also check the vacuum hose going to the EGR( if there is one).by the way the 2 rubber hoses connected to the DPFE are NOT normal vacuum hoses.they are special high-heat hoses.

Aug 29, 2009 | 1997 Mercury Villager

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Check engine light with code p1401

Recirculation (EGR) valve codes. The Differential Pressure Feedback EGR (DPFE) sensors on these vehicles have a high failure rate. Ford now uses a redesigned DPFE sensor. In effect, since the failure rate is so high, if you get this code, replace the sensor and retest. When the DPFE Sensor starts failing, it gives the PCM bad information. The DPFE Sensor is less sensitive, and the PCM thinks less recirculated gas is being burned than is actually so. Trying to compensate, the PCM opens up the actuator too much. This excessive amount of EGR combined with the air coming in via the throttle body leans out the fuel mixture, causing a lean misfire, which is the "stumble" or "hesitation" that is common as the DPFE Sensor fails. The DPFE sensor in the Focus is not very robust, requiring frequent (every 30k miles or sometimes less) replacement or a work around. Note that complete DPFE sensor failure is a very slow process, and the check engine light won't come on until the DPFE sensor is pretty much done for. If you're experencing stumble or hesitation while cruising, and think that it might be related to DPFE sensor failure. If the stumble goes away, then your DPFE sensor is more than likely failing. Of course, replacement of the bad DPFE sensor is the official recommended fix for this problem.

Jul 29, 2009 | 1998 Ford Ranger SuperCab

1 Answer

Service engine soon light

if it is for the EGR valve again, replace the valve and the DPFE sensor. Not sure what an EGR regulator is. Could be a bad hose going to the DPFE, or a clogged tube or EGR port also.

Jun 18, 2009 | 2002 Ford Explorer

1 Answer

I am having trouble getting my check light to go off after I had it checked and the EGR valve was replaced. The light comes back on after about 15 miles of driving and the code reads EGR poor flow. I can...

Insufficient EGR Flow Detected

Possible Causes:
DPFE sensor signal circuit is shorted to ground
DPFE sensor VREF circuit is open between sensor and PCM
DPFE sensor downstream hose off or plugged
DPFE sensor hoses both off, loose or damaged
DPFE sensor hoses connected wrong (reversed)
EGR orifice tube is damaged or restricted
PCM has failed
And what sets the code is…….Engine started, engine running in closed loop under steady cruise conditions, and the PCM detected the DPFE sensor input indicated insufficient EGR gas flow. Run the KOER Self-Test, and if DTC P1408 is present, the fault is currently present. This code sets in 2 Trip(s). The light will stay on until the cause is repaired. A bad EGR valve is only on possible cause.

Hope this helps,


Feb 28, 2009 | 2002 Ford Mustang

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