Question about 2001 Ford Escape

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P401 emission code ford escape 2001 6cyl

2001 ford escape 6cyl.
Code p401 called for a replacement of the egr valve.
Replaced egr valve and dpfe sensor.

Computer reset itself (finally)after driving it for 328 miles.

Check engine light came on again.
Same code.

Replacement part # for dpfe sensor.
Napa 2-22003.
I noticed that this replacement part had a wider body to it than the stock part.
Also the electrcal harness does not snap into position like the stock one.
The pins mate correctly but it doesnt want to lock and seat.
Is the p401 code call limited to 2 parts that may fail or are there more parts to change?

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P0401 shows an Exhaust Gas Recirculation Flow Insufficient. Without a good scan-tool you will be playing the "Parts Changing Game". Insufficient flow can be the result of a vacuum leak, bad MAP sensor, an exhaust leak, faulty EBP sensor, carbon build-up, and so on. I wish I could say more but with all the electronics it is more complicated then earlier cars.

Posted on May 12, 2010

  • 2121212 Jun 28, 2011

    There is no MAP sensor, however there is a MAF sensor = Mass air flow sensor, this inline with the air flow after the airfilter bvefore the throttle-body

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I assume the carbon dust was not removed from the EGR pipe at the bottom in the rear of the engine.

Posted on Mar 31, 2011

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1 Answer

97 ford escort p401 code


You may have carbon plugging the passages on the intake side of the valve. Remove the valve and start the engine. It should die or run very rough. if it idles normal then you have blockage that needs to be cleaned out.

Dec 05, 2013 | Ford Cars & Trucks

1 Answer

P1405


P1405- Differential pressure feedback sensor upstream hose off or plugged
It has to do with your EGR operation

The Differential feedback pressure sensor is located under the hood on the drivers side.

If you locate your EGR valve you will see a tube going from it to your exhaust manifold.

you will notice 2 small tubes leading from the large one feeding into a small sensor....this is the DPFE sensor which is throwing your code.

Now....the DPFE "could" be doing its job by telling you the orfice in the tube is plugged, but the DPFE is known to fail on these trucks.....but it throws a code P401....

It may be a good idea to try a new DPFE sensor before a new EGR tube.


Hope helps.

Mar 09, 2012 | 2003 Vauxhall Vectra

1 Answer

My 2006 escape 3.0 idles rough but seems to run smooth down the road.engine light is on and shows code po402 excessive egr flow. engine starts fine when cold, but cranks for about 10 seconds unless you...


P0402 Exhaust Gas Recirculation Flow Excessive Detected A code P0402 most likely means one or more of the following has happened:
  • The DPFE (differential pressure) sensor is faulty and needs to be replaced
  • There is a blockage in the EGR (most likely carbon buildup)
  • The EGR valve is faulty
  • The EGR valve may not be opening due to a lack of vacuum
  • Solutions
  • With a P0402, it is common for people to replace the EGR valve, only to have the problem return. The most likely solution is to replace the DPFE sensor.
    • Check the voltage at the DPFE sensor both at idle and when the EGR is open
    • Replace the DPFE sensor

May 04, 2011 | Ford Escape Cars & Trucks

1 Answer

1998 taurus 24v engine code p401-- what is most common fix?


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.

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 this helps (remeber to rate this answer).

Jan 12, 2011 | Ford Taurus Cars & Trucks

3 Answers

1998 ford escort code P0401 I need to know what this code is for. Thank You.


This code is an EGR code for insufficient amount of egr. It could be that the egr tube is clogged or the egr itself is bad or there is not enough vacuum to open the egr properly. There is also a sensor called the DPFE(differential pressure feedback egr) is faulty.

Jun 25, 2010 | 1998 Ford Explorer

1 Answer

P401 code?


P0401 OBD-II Trouble Code - 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 this helped (remember comment and rated this).

May 05, 2010 | 2002 Honda Passport

2 Answers

Diagnostic trouble code po401


The p0401 indicates a lack of egr flow. The DPFE sensor (ford basic part number 9J460) is the most common cause of this code. Call a ford dealer for a price and ask if your vehicle is covered under any emissions recall or program for p0401.

Apr 15, 2010 | 2002 Ford Escape

2 Answers

Got code P1402 sum say it is EGR problem, but that code is P0402 I have check all componets and replaced senser,regarlator,and part right next to regalator. also the code was DPFE senser high voltage any...


code 1402 EGR valve position sensor open or shorted, check the wires going to the sensor and the plug itself,hope this helps if not get back to me and we'll go from there

May 15, 2009 | 2001 Ford Escape

1 Answer

2001 Ford Escape error code P0402


Ok here is the solution when I had the exact same problem with my 2001 Ford Escape:
Replace:

Idler air control valve
EGR vaccum sylenoid
EGR valve

I did all of this work myself (and as a girl it was not hard at all), it cost me around $170.00 for all of the parts, had it done in less than 2 hrs., erased the codes and have not had a problem since then! I hope this helps you out, cuz it sure would have helped me out when I encountered the same problem.

Apr 07, 2009 | 2001 Ford Escape

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