Question about 2000 Ford Expedition

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I am working on a 2001 ford expidition check engine light is on put a sccanner on it po401 code came up what is possibly wrong

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EGR problem, usually bad EGR valve, bad EGR sensor or even vacuum problem to EGR.

Posted on Jun 28, 2009

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2 Answers

Check engine light code po401


EGR insufficient flow detected, could be a failing exhaust system creating a blockage,

Aug 31, 2014 | 2003 Ford Taurus

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Runs rough thru gears 2004 ford expidition


Google the codes you have in the pcm
& then you will know what system has a
possible failure

Same thing everyone has been doing for
decades every time a check light comes on

Feb 28, 2013 | 2004 Ford Expedition Eddie Bauer

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2001 windstar have code po401


PO401 is a egr problem, low /no flow detected. Unfortunatly most of the time with the 3.8 engine is the ports in the intake manifold get clogged. So if testing reveles the egr valve is working and the dpfe sensor is reading between around .8 to 1.2 volts at idle your probably looking at taking all the plastic plenum parts off to clean the passages. This can be done without removing the wiper box abobe the plenum but you have to remove the iac and sneek the manifold our from the drivers side forward first.

Jul 11, 2012 | 2001 Ford Windstar

1 Answer

I have a 1997 ford Taurus 3.0 v 6 the check engine light is on My scanner shows a po401 low flow egr what is the most commed fix.


EGR Valve

You can print all codes from
PO-011 thru PO804 on www.engine-
light-help.com/generic

Remember every vehicle has MFG
Specific Codes that aren't easy to find
and you will need them also

Feb 04, 2011 | 1997 Ford Taurus

1 Answer

The engine light is on in my 2001 ford winstar, what could the reason?


You can only answer that question once you retrieve the possible codes set when the MIL Light came on. You need a code reader or scanner put on the diagnostic connector under the dash, near your right knee.
Some auto parts store do that for free, but seldom know what the codes are. Don't let them sell you any parts, as codes don't indicate what is wrong or needs to be replaced.
Go to a good close by repair shop.not a dealer.

Jul 30, 2010 | 2001 Ford Windstar

1 Answer

Engine light on code reads po401


I believe this code is insufficient EGR flow. On this engine, the passages to the EGR valve often become carboned up and cause this code. Remove the EGR valve and inspect the passages to see if they need to be cleaned.

Jun 14, 2010 | 2006 Ford Mustang

1 Answer

I have a ford explorer sport 2002 and my chek engine light came on it put out a code PO401 do you know what i need to buy


PO401 code means that:
The PCM has determined that there is insufficient flow in the exhaust gas recirculation system. Definition: EGR system fault (Exhaust Gas Recirculation) Probable Causes: a. Blocked passage on EGR system b. Failed EGR Valve c. EGR solenoid faulty d. Failed EGR pressure sensor where applicable e. Failed EGR position sensor where applicable

Mar 08, 2010 | 2002 Ford Explorer

1 Answer

How many miles do you have to drive to reset check engine light on 2001 ford expidition


take negative battery cable off for about 15 minutes should reset or it is between 3 and 15 starts

Sep 30, 2009 | 2001 Ford Expedition

2 Answers

Mercury sable 2001 duratec engine DOHC I get check engine light and diagnostic code PO401". Any suggestions?


Barring any vacuum leaks, P0401 is indicative of a bad EGR valve. Hope this answers your question. Best of luck.
Greg

May 30, 2009 | 2001 Mercury Sable

2 Answers

Ford explorer 2002 v-8 code po401 low flow on obd-2


Replacement engine put in with 51000 miles and now the engine light is on and the speedometer goes from 50 to 0 and then jerks

May 31, 2008 | 2002 Ford Explorer

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