Question about 2002 Ford Escape

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Trouble code P0401

My wife's 2002 Ford Escape is intermittedly hard to start, it will only start if you have your foot partially on the gas. The engine light and the code is, P0401, EGR, insufficient flow, any help?

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  • Anonymous Mar 31, 2014

    my egr value kept burning out so i put a new catalytic converter an a new egr value. drove it a day an it started hesitating in reverse the more i step on the gas the more the car started smoking.

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This video should help diagnose and fix EGR issues.
https://youtu.be/jZmJ54sDWJQ

Posted on Jan 17, 2016

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It sounds like the iat sensor "intake air temperature" sensor. When its cold it enriches the mixture.
God Bless Greg

Posted on Dec 05, 2008

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1 Answer

2002 ford escape starts but wont stay running unless the foot is kept on the pedal. took it to a shop and had a diagnostic test on it. It's saying there is nothing wrong. Mechanic said it must be


Computers rarely fail. The diagnostic would not show anything wrong unless a trouble code is set UNLESS the diagnostic used live data vieew. Most shops dont do that . So at what RPM does it not die? How many miles are on it? Ford uses something called an idle air speed motor. They are prone to fouling.

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Check engine light code P0401 98 Ford expedition


OBD-II Trouble Code 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. 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.

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

Check it and keep us updated. Hope this helps (remember to rating this free answer).

Oct 13, 2011 | 1998 Ford Expedition

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2002 escape with 34,000 actual miles, when started cuts off and wont keep running unless foot is on the accelerator


Does the check engine light com on, if so have codes read, if not replace the throtel position sensor .

Dec 07, 2010 | 2002 Ford Escape

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Ford escape 2001 had code P0401 what might be the problem and part to replace?


I looked this up for you. I hope your Escapade is working better. Here is the solution:

http://repairpal.com/OBD-II-Code-P0401-Ford
Thanks,
Jud

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2002 FORD RANGER 6CYL. 4.0L I GOT A P1400 TROUBLE


Exhaust gas recirculation flow insufficient detected.
Maybe you got a bad DPFE sensor, or the pintel inside the egr valve is not opening all the way causing the insufficient flow.

May 14, 2010 | 2002 Ford Ranger Regular Cab

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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

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My Escape will start but idle so low i have to


these are common symptoms of fowled plugs, or dirty fuel filter, check these, if not, try a computer diagnosis.

Oct 26, 2009 | 2002 Ford Escape

1 Answer

I have check engine light on, trouble code p0401, how can I fix it. I'll appreciate. Thank's


P0401 = Exhaust Gas Recirculation, insufficient flow.

I would start with testing the EGR valve and checking the source line for a vacuum leak. EGR may need to be cleaned.

Jun 08, 2009 | 2002 Ford Explorer

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Idle speed


From what I can tell with the info I have It has the sound of the IAC it messing up and this is a pretty common problem sometimes you can remove it and clean it but you will need to replace it in the near future.Iac stands for Idle air control
Jim

on the other user the first thing you must do is fix the vacuum leak then check the code and if it is a P0401 or so this is caused by the DPFE and it will need replaced it too is a fairly common problem and will cause alot of different drivability concerns.DPFE stands for delta pressure feedback sensor
JIM

Sep 03, 2008 | 2002 Ford Escape

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