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99 ford explorer: Codes showing..po174..flow..tool
Stilling having problems with my 99 ford explorer. Codes showing up are PO174- system to lean-bank2 PO401-Exhaust gas recirculation flow insufficient detected PO171 systm tool lean bank 1 Can you tell… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
1998 Ford Ranger: 2.5L..EGR..flow..The Check Engine Light is on
I have a 1998 Ford Ranger 2.5L that gives the following code: P0401 "Exhaust Gas Recirculation (EGR) valve, insufficient flow detected". The Check Engine Light is on. What does this mean, and what cau… read more
Pavlin Koev
Pavlin Koev
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High School or GED
2,687 satisfied customers
Mustang: v6..their tool dose not register misfire..exhaust..spark plug
hi my mustang v6 2000 a small misfiring under lode,what can cause it ?? this is what's on the services sheet (#PO401-INSUFFICIENT EXHAUS GAS RECIRCULATION FLOW DETECTED SMALL MISFIRE UNDER LOAD)They s… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
2000 Ford windstar: Engine light..digital CAN obd 2&1 tool..flow
2000 Ford Windstar 3.8 Problem: Engine light on, cannot pass smog Just performed a test with the Innova digital CAN OBD 2&1 tool. It read: PO401-Exhaust gas recirculation-insufficient flow detected PO… read more
lostrider
lostrider
lead technician/working shop foreman
Vocational, Technical or Trade Scho
2,958 satisfied customers
These code po401 /exhaust gas recirculation insufficient flow
i want to know what part to replace on these code po401 /exhaust gas recirculation insufficient flow detected… read more
CTFordTech
CTFordTech
Auto Technician
Vocational, Technical or Trade Scho
4,460 satisfied customers
alldata codes say (1) exhaust gas recirculation..A flow insufficient
alldata codes say (1) exhaust gas recirculation "A" flow insufficient detected (2) system to lean bank 1 (3) system to lean bank 2 what do these mean in laman terms?… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Mustang: Code P0401 Insufficient exhaust gas recirculation flow
01 Mustang v6 auto. Code P0401 Insufficient exhaust gas recirculation flow detected. What does that mean and how do I fix it?… read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
4 satisfied customers
95 ranger: fault codes..P0171: System to lean (bank 1), P0174: System
how do i fix my fault codes on my 95 ranger P0401: Exhaust Gas Recirculation Flow insufficient detected, P0171: System to lean (bank 1), P0174: System to lean (bank 2)… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
1,524 satisfied customers
exhaust gas recirculation flow insufficient detected(po401..Circuit
The Fault description was exhaust gas recirculation flow insufficient detected(PO401)...and...Sensor Circuit Bank 2 sensor 2(PO156)… read more
zzdaryl
zzdaryl
Lead Auto Tech
Some college and advanced training
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98 ford ranger: cylinder..loosing power..the check engine light..flow
I have a 98 ford ranger 4 cylinder, it seems like it is loosing power the check engine light is on. I did the the diagnostic test and it gave me a code P0401( exhaust gas recirculation flow insufficie… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 satisfied customers
1996 ford f-150: obd..(exhaust gas recirculation flow insufficent
i have a 1996 ford f-150 ,ihook my obd and it gave me a code po401 ....which is (exhaust gas recirculation flow insufficent detected) how can i fix this myself ...i like to work on my own truck… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
2002 Ford Explorer: our check engine light come..DTC..flow..EGR valve
We have a 2002 Ford Explorer, after my last gas fill-up our check engine light come on. We ran a diagonistic test and got the code DTC P0401 (Exhaust gas recirculation flow insufficient detected). Aft… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
29,223 satisfied customers
2001 ford focus 2.ol zetec.the OBD-11 trouble code,po401.
problem with a 2001 ford focus 2.ol zetec.the OBD-11 trouble code,po401.EGR insufficient flow detected.I replace the EGR valve.EGR solenoid.And the EGR differential presure sensor.my gas milage has dr… read more
Glenn
Glenn
Senior Master Ford Technician
Associate Degree
1,690 satisfied customers
new egr Valve and O..hose..Complete major tune-up Diagnostic report
PO401 and PO141 codes won't clear off even after new EGR Valve and O-2 sensor repairs. New vaccum hose. Complete major tune-up Diagnostic report while driving say's all is working correctly. ENgine li… read more
Roadranger
Roadranger
Vocational, Technical or Trade Scho
20 satisfied customers
2001 Ford Escape: 3.0L..OBD II..Flow..Which oxygen sensor should I
I own a 2001 Ford Escape V6 3.0L engine and have OBD II codes of P0401 & P0402 Which translates to "Exhaust Gas Recirculation Flow Insufficient Detected" & "Exhaust Gas Recirculation Flow Excessive De… read more
Afordable
Afordable
Sales
Associate Degree
172 satisfied customers
My check engine light came on so I had an obd 11 reading done.
My check engine light came on so I had an obd 11 reading done. It said exhaust gas recirculation flow insufficient. I started the truck and disconnected the tubing on top and connected another piece t… read more
Fordster
Fordster
Mastertech
Vocational, Technical or Trade Scho
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1996 ford ranger: auto zone..check engine light..flow..recirculation
i took my 1996 ford ranger to auto zone to get the check engine light checked.the code was po401. it also said that there is insufficient flow in the gas recirculation system.whats wrong?… read more
Fordanswerman
Fordanswerman
Ford Senior Master Technician retired
Associate Degree
2,912 satisfied customers
Inspection..P0401..Exhaust Gas Recirculation flow insufficient
I failed an inspection because of an error code P0401, Exhaust Gas Recirculation flow insufficient detected. What does this code mean and what do I need to do to fix it?38763.8187545139… read more
Brian
Brian
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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)

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16 years experience

John Mc

John Mc

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Chuck

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Cam

Journeyman Automotive Technician

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Mike V.

Mike V.

Auto Service Technician

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

Richard

Richard

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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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