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Have a 2001 F150 with the 4.6 engine. I am getting P0401
have a 2001 F150 with the 4.6 engine. I am getting P0401 code. I have don a few things so far, tested all system functions and all meet spec with the exception of the DPFE, at idle the Flow signal is … read more
Roy
Roy
shop foreman
Associate Degree
4,585 satisfied customers
Ford tauras 3.0, 12valve, built 12/04,150,000 miles runs
Ford tauras 3.0, 12valve, built 12/04,150,000 miles runs fine but will not idle, must keep it above around 1500 rpm or it dies has codes, po171, po174, po302, 2195, 2197. found no loose wires or vacuu… read more
BOBBYSS
BOBBYSS
Automotive Repair/Damage Investigator
Associate Degree
14,591 satisfied customers
Ford Escape V6: My ford escape 2001 v6 shows P1401, EGR DP
My ford escape 2001 v6 shows P1401, EGR DP high input. I have replaced the EGR DP module, cleared the tubes of the EGR flow orifice , and tested the operation of the EGR valve and the operating soleno… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
PPO401 error code with check engine light. Engine chokes while
PPO401 error code with check engine light. Engine chokes while accelerating. 2003 Expedition 5.4L… read more
Ironmike
Ironmike
ASE Master ,Ford Certified Master Tech
Vocational, Technical or Trade Scho
3,442 satisfied customers
F150: My 2002..park, under load idles..volts..same problem
My 2002 4.2L F150 Idles fine and accelerates fine in park, under load idles fine but stumbles when accelerated, scanner showed a 1401, tested DPFE stuck on 2.9 volts, replaced with new, tested new par… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
1995 ford explorer: Check engine light..runs rough..drove..I park it
1995 ford explorer with engine codes 177, 332, 336, 337 KOEO Check engine light is on and runs rough at times. Just cleared codes lastnight and drove 40 miles and light is on again. After driving awhi… read more
BigBob
BigBob
Service Manager
High School or GED
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Ford Escape: im working..eng..lite that keeps coming back on.
I'm working on a 01 Ford Escape with a chk eng. lite that keeps coming back on. The code was po401 at first. We then replaced the dpfe sensor and checked to see that the egr valve and solenoid were wo… read more
Andy I
Andy I
Senior Master Technician
Associate Degree
245 satisfied customers
96 ford ranger: 4l V6, 4wdid like information..following dtc Codes
I have a 96 ford ranger, 4L V6, 4WD I'd like information on the following DTC Codes:P1409; P1401; and P1504… read more
Chuck
Chuck
ASE Certified Technician
Vocational, Technical or Trade Scho
1,685 satisfied customers
Ford escape: V6: IT HAS THE FOLLOWING CODES..COMPRESSION..GASKET..MILE
04 ford escape, V6: IT HAS THE FOLLOWING CODES: PO430,403,300,174,316,102,122,354,355,356,511,1450,411 & PO113. ENGINE RUNS WITHOUT A MISS, ALL 6 CYLENDERS FIRING & COMPRESSION IS GOOD. JUST NOW UPPER… read more
Tim Mohr
Tim Mohr
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Master's Degree
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Ford Taurus: egr..light came on again..faulty connector/sensor
My Ford Taurus (2000) is logging a P401 EGR insufficient pressure. It has been to the Ford Dealer and the light came on again. I have an AutoTap system to read the codes but not enough knowledge to re… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
my ford expedition check eng light code 401 is on I have replaed
my ford expedition check eng light code 401 is on I have replaed the EGR and EGR sensor the lightwas clear for two weeks and now is on again… read more
Eric
Eric
Retired
N/A
33,918 satisfied customers
P0401 CODE ON 01 V6 MUSTANG .PERSISTENT EVEN AFTER REPLACING
P0401 CODE ON 01 V6 MUSTANG .PERSISTENT EVEN AFTER REPLACING EGR, DPFE, AND VACUUM MOD. HOW DO GET RID OF THIS PESKY CODE AND ENGINE LIGHT?… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
2000 mustang: 4.6 40k miles, cruise..surging..EGR valve..vacuum leaks
2000 mustang 4.6 40k miles, cruise idle surging. no DTC''s, EGR valve good, no vacuum leaks. Removed vac line from EGR and plugged manif vac supply to the EGR vent valve . Problem eliminated, but EGR … read more
Brian
Brian
Automotive Service Consultant/Technician
Bachelor Degree
780 satisfied customers
flow..egr valve no help..car also surges on acceleration at times
I have a low egr flow code 132 I replaced the egr valve no help. The car also surges on acceleration at times… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
97 Ford Taurus: DOHC..intermittent engine code P401..EGR valve
97 Ford Taurus 3.0 DOHC has intermittent engine code P401, insufficient EGR flow. Replaced EGR valve, still fails. EGR solenoid does not hold vacuum. Grreen line form solenoid to EGR valve is OK. What… read more
Larry
Larry
Technical Editor
Bachelor's Degree
718 satisfied customers
2001 escape: P0401..I know it is not the EGR, vacuum check..solenoid
I am getting a P0401 code on my 2001 escape 3.0. I know it is not the EGR, vacuum check has determined that. How do I determine whether it is the pressure feed back sensor or the vacuum solenoid? The … read more
Glenn
Glenn
Senior Master Ford Technician
Associate Degree
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1999 ford taurus: 3.0L v6 EEI(U)204..map sensor..rattle..converter
Hi my name is XXXXX XXXXX have a 1999 ford taurus wagon 3.0L V6 EEI(U)204,400 miles.I have (MIL) light on.The trouble code is P401 (insuffecient egr flow).The EGR valve and map sensor have been replac… read more
Rmldaytona
Rmldaytona
ASE certified technician
College
1,458 satisfied customers
2002 Ford Escape: egr Vacuum, egr Valve and the egr..pulling..trailer
I have a Code P0401 and sometimes a P0402 on my 2002 Ford Escape.. I have changed the EGR Vacuum, EGR Valve and the EGR Sensor.. in that order. After I changed the Sensor, the light stayed off for abo… read more
ttiger79
ttiger79
Auto Mechanic
High School or GED
880 satisfied customers
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Ron

Ron

ASE Certified Technician

25,182 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

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Chris (aka- Moose)

Technician

29,223 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

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19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

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33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

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Cam

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GM Grand Master Technician 2007. 14 years Automotive experience.

Mike V.

Mike V.

Auto Service Technician

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25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

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12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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