Question about 2001 Mercury Sable

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DPFE EGR Pressure Feedback Sensor Issue - 2001 Mercury Sable

I am taking my car to the shop tomorrow and the code received on my car is P1401 DPFE Circuit High Voltage - Differential pressure feedback EGR. The dealer was charging me $1,088.03 (which include EGR Pressure Feedback Sensor, Replace Pcv hoses and clean prots, Induction System Service, and Clean EGR ports), now the shop tomorrow is charging $80.00 for EGR Pressure Sensor Kit and $65.00 for Labor. Do you think this is reasonable? If unattended can this ballon to a major problem for me? Because their is no noticeable difference in the driveability of the car.

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  • Anonymous May 24, 2009

    i do not want to damage the tubes that the sensor sits in. what is the best way to pull it out?

  • Dave  C
    Dave C May 11, 2010

    The second shop is reasonable, just do it for peace of mind.

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  • Master
  • 4,669 Answers

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.

Posted on May 20, 2009

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1 Answer

Replace P1401 DPFE Sensor circuit


The P1401 code could be for anything Egr related. Usually it is a defective DPFE (differential pressure feedback Exhaust) But, it can also be caused by a defective EGR valve or EVR (Exhaust Valve Regulator) solenoid/switch. --or an air leak at any part of the system including the silicone hoses that feed the DPFE/

Oct 12, 2014 | 2002 Ford Taurus

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

1 Answer

1401 egr code


P1401 FORD - DPFE Sensor Circuit High
Faulty Differential Pressure Feedback Electronic (DPFE) sensor
- Differential Pressure Feedback Electronic (DPFE) sensor harness is open or shorted
- Differential Pressure Feedback Electronic (DPFE) sensor circuit poor electrical connection. This is not likely the EGR but the EGR pressure sensing valve.

Oct 19, 2012 | Cars & Trucks

1 Answer

Code p1405


P1405 FORD - Differential Pressure Feedback Electronic Sensor Circuit Upstream Hose.

This means either the EGR position sensor hose is pulled off or damaged or the sensor is defective. The sensor is referred to as the EGR (exhaust gas recirculation valve) DPFE sensor.

Aug 29, 2011 | 1998 Mercury Sable

2 Answers

The fuel pressure is low and it wont move the code that it gave me was po1401 what does that mean


CODE P1401 IS SENSOR CIRCUIT HIGH INPUT. POSSIBLE CAUSES DPFE SENSOR SIGNAL CIRCUIT IS OPEN.DPFE SENSOR GROUND CIRCUIT IS OPEN.DPFE SENSOR SIGNAL IS SHORTED TO VREF 5V. DPFE SENSOR IS DAMAGED OR IT HAS FAILED. PCM HAS FAILED.******* WHEN YOU SEE CODE P1401 FLASHING ********** WHAT IS HAPPENING ENGINE RUNNING AND THE PCM DETECTED THE DPF EGR SENSOR SIGNAL WAS MORE THAN THE MAXIMUM CALIBRATED VALUE OF 4.5 VOLTS. ON THIS VECHICLE APPLICATION THE DPPE EGR VALVE AND EVR SOLENOID ARE INTEGRATED INTO THE ESM ASSEMBLY.

Jun 05, 2011 | 2001 Ford Expedition

3 Answers

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?


P1401 - DPFE EGR CIRCUIT HIGH INPUT

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

1 Answer

2002 Mercury cugar P0401 and P1401


DTC P0401 - Insufficient EGR Flow

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.

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


DTC P1401 - Differential Pressure Feedback Electronic Sensor circuit High Voltage

I think that you need a new DPFE; first check it, you could also have something restricted. There are ports in the throttle body that can cause this as well. Check THIS LINK.

Hope helps.

Nov 04, 2010 | Mercury Cougar 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

My 2001 E150 4.2L has a high input EGR sensor problem


Check the pipe that feeds the DPFE for cracks, if that's ok, check the Engine's back pressure at the front O2 sensor port. It should have no more than about 1 lb of back pressure max. If it's higher, you may have a faulty cat converter. (they're not cheap) When they go they sometimes plug the muffler with debris.

Jun 06, 2009 | 2001 Ford Econoline

2 Answers

DPFE Sensor with codes PO401 And PO402


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

Nov 12, 2008 | 2001 Mercury Sable

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