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P0401 smart diesel 2005 - fortwo Smart Cars & Trucks

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What is p0401?


Insufficient EGR Flow

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

May 29, 2014 | 2005 Ford Explorer

1 Answer

Hi I have a C5 2005 turbo Diesel that is blowing


Hi Paul
You have a faulty starter motor,Common fault on the c5 starter sounds ok but is drawing too much power,And blows the 20 amp fuse for ecm

Oct 20, 2013 | 2005 Citroen C5 2.0

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P0401 is showing I have a 2005 ford explorer what do I need to change out


P0401 Exhaust Gas Recirculation Flow Insufficient Detected
Remove the EGR valve and clean up passage ways using spray on carburetor/fuel injector cleaner.

Oct 08, 2010 | 2004 Ford Explorer

1 Answer

Air bag light on no accidents ever 2005 smart for two cabr. diesel...thanks


you need to check with star , as you might have a bad resistor

Jan 23, 2010 | 2008 Smart fortwo

1 Answer

How do you replace the thermostat in 2005 smart coupe diesel and what temp are they


I have a 2005 Smart fortwo and engine light came on this morning. I have checked oil and prestone and both are fine. Can you tell me what else may be wrong with it?

Nov 16, 2009 | 2008 Smart fortwo

2 Answers

2005 Ford F250 Deisel DTC 401 Exhust recirulaton flow insuffent


The DPFE sensor has failed on you egr system .Replace just this part and don't let someone sell you a egr valve .The sensor is about$70 and faily easy to do .:)

Sep 09, 2009 | 2005 Ford F 250 Super Duty

2 Answers

2005 Golf TDI Diesel - EGR "Emissions workshop" fault light


Hi, The EGR valve itself is on a set of flexible pipework - usually stainless steel - which runs between the inlet manifold and the exhaust manifold. The EGR actuator valve is pneumatically / vacuum operated by a solenoid valve, controlled by the ECU ( aka the brane). It's not usual for the EGR valve itself to fail, more likely the solenoid valve or its electrical connector getting dirty. If you google for VAG TDI N75 valve you should get all the info you could possibly ever need :-)

Hope this helps, D.

Jul 16, 2008 | 2005 Volkswagen Golf

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