Question about 2001 Mercury Sable

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DPFE Sensor with codes PO401 And PO402

Where Is the DPFE sensor located on a 2001 Mercury Sable with a V-6
over head valve engine.

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  • Anonymous Dec 02, 2008

    Jarvis Basby (404) 759-6420

  • Anonymous Dec 18, 2008

    Lots of trouble with this. People change the DPFE and the EGR valve and the codes which are opposing, keep coming back. Sell the car!

  • Anonymous Mar 12, 2014

    Where is dpfe sensor located on mitxubishi montero

  • Anonymous Mar 14, 2014

    dpfe sensor location 2000 f250 5.4

  • Anonymous Mar 16, 2014

    1999 sable

  • Anonymous Mar 30, 2014

    trans range sensor is the same a neutral switch

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The DPFE is located near the EGR valve, it has 2 very thick silicone rubber hoses connected to it that come off the exhaust. It is rectangular and about 1/2 the size of a pack of smokes

Posted on Nov 12, 2008

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Where is a dpfe sensor located on a mercury sable at ?

Posted on Jan 09, 2013

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1 Answer

What is that term DPFE you use and where it is located


DPFE stands for differential pressure feedback emissions and the sensor is the square metal box connected by hoses to the EGR valve.
When you get a trouble code for the sensor you would need to test the sensor and the EGR valve.

Jan 09, 2013 | 2001 Mercury Sable

2 Answers

2001 Mercury Sable Check Engine (EGR)


hi , i am sorry to tell you that you are right you wasn't need a new transmission , the hole problem is in the controler and thank you for using fixya

Jun 27, 2008 | 2001 Mercury Sable

1 Answer

Erg flow insufficient


  • The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
  • There is a blockage in the EGR (tube), most likely carbon buildup
  • The EGR valve is faulty
  • The EGR valve may not be opening due to a lack of vaccuum
It is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
  • Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
  • Clean out the EGR valve and/or tubing to remove deposits
  • Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
  • Replace the DPFE sensor (with a good quality / OEM one)
  • Replace the EGR valve
The EGR valve is located in the engine compartment. Its should look this

2_7_2012_10_25_48_pm.jpg

Feb 07, 2012 | 2000 Mercury Sable

2 Answers

1999 mercury sable engine code p1744,p0401. Failed e check. EGR looks new, replaced egr solenoid then cleared codes. what more can i do about the p0401 code and the p1744 code Thanks


for p0401:
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open.
Clean out the EGR valve and/or tubing to remove deposits.
Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model).
Replace the DPFE sensor (with a good quality / OEM one).
Replace the EGR valve.

Jul 08, 2011 | 1999 Mercury Sable

1 Answer

Just bought a 2002 Mercury Sable LS, I brought it to Ford/Mercury repair to get a full diagnostic, they said I need to change the DPFE sensor, which some people say it's the same as the EGR sensor, but...


You will need to get the parts from the dealer.

What engine?

the EGR valve is generally located on the backside of the intake plenum near the throttle body. There will be a metal pipe that goes in between the EGR valve and the exhaust manifold. If you follow that pipe you will run into to rubber looking hoses. the DPFE sensor will be on the other end of those two hose. The hoses are two different diameters as well as the fittings that they attach to. Make sure you have the right hose going to the right fitting.

Oct 12, 2010 | Mercury Sable Cars & Trucks

1 Answer

2001 mercury engine code P0401


DTC P0401 - Insufficient EGR Flow

What does that mean? EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Symptoms: You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

Causes: A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum

Possible Solutions:
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve

Hope helps (remember comment and rated this).

Jul 14, 2010 | 2001 Mercury Sable

1 Answer

Where is the DPFE Sensor located on my 2001 Mercury Cougar? Keep getting P0401 code...changed AGV valve and solenoid...engine light keeps coming on after i drive


The dpfe is located at the back of the intake manifold on a metal bracket it has an electrical connector coming from it and 2 rubber hoses that go down to the exaust manifold

Dec 27, 2009 | Mercury Cougar Cars & Trucks

1 Answer

DPFE EGR Pressure Feedback Sensor Issue - 2001 Mercury Sable


The DPFE sensor is a very common failure on all Ford models. Just have the sensor replaced. Or do it yourself. It is very easy to change you can do it in 10 minutes.

May 20, 2009 | 2001 Mercury Sable

1 Answer

Trouble code 401


P0401 is: Exhaust Gas Recirculation Flow Insufficient Detected

The pipes are supposed to have pressure in them when the EGR valve is open, but sometimes, with the EGR closed may have vacuum... the DPFE compares the pressure/vacuum values from the 2 pipes (these 2 pipes take their pressure before and after an orifice) and knows how much recirculated exhaust gases go through the engine...

Your problem definitely sounds like an EGR problem, but it could be the EGR valve, the DPFE sensor, a clogged hose, a leak/clog somewhere in the EGR piping...

The code basically means your engine either is not getting the amount of burned exhaust gases it should back in the intake to lower NOx emissions or the DPFE sensor thinks your engine is not getting enough burned exhaust gases...

May 07, 2009 | 2000 Mercury Sable

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