Description
OBD-II Trouble Code Description for P0401 Aston Martin
Exhaust Gas Recirculation Flow Insufficient Detected
What does this mean?
OBD2 Code P0401 Aston Martin definition:
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 Aston Martin code means that OBD detected an insufficient amount of EGR.
Symptoms
Possible sumptoms of OBD code P0401 Aston Martin
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.
Causes
Possible causes of OBD code P0401 Aston Martin
A code P0401 Aston Martin 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
Possible Solutions
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit. ?Use a vacuum pump and pull the EGR valve open while monitoring engine RPM’s & DPFE voltage. There should be a noticable difference in RPM’s with the EGR open ?Clean out the EGR valve and/or tubing to remove deposits ?Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model) ?Replace the DPFE sensor (with a good quality / OEM one) ?Replace the EGR valve
The OBD2 Code Information Be Applicable For Aston Martin:
2014 Aston Martin Vanquish Volante,2014 Aston Martin V12 Vantage S,2014 Aston Martin Rapide S,2013 Aston Martin Vantage SP10,2013 Aston Martin Vanquish Q,2013 Aston Martin Vanquish Centenary Edition,2013 Aston Martin V12 Zagato,2013 Aston Martin V12 Vantage Roadster,2013 Aston Martin DB9,2013 Aston Martin CC100 Speedster Concept,2013 Aston Martin AM 310 Vanquish,2012 Aston Martin Virage Volante,2012 Aston Martin Virage,2012 Aston Martin Vantage GT3,2012 Aston Martin V8 Vantage S Roadster,2012 Aston Martin V8 Vantage S,2012 Aston Martin V8 Vantage,2012 Aston Martin Cygnet,2011 Aston Martin Vantage GT4,2011 Aston Martin V8 Vantage N420 Roadster,2011 Aston Martin V8 Vantage N420,2011 Aston Martin V12 Zagato Racecar,2011 Aston Martin V12 Zagato Concept,2011 Aston Martin DBS Carbon Edition,2011 Aston Martin DB9,2010 Aston Martin V12 Vantage,2010 Aston Martin Rapide,2010 Aston Martin One-77,2010 Aston Martin DBS Volante,2009 Aston Martin Vantage GT4,2009 Aston Martin V8 Vantage Roadster,2009 Aston Martin V8 Vantage,2009 Aston Martin Lagonda Concept,2009 Aston Martin DB9 Volante,2009 Aston Martin DB9,2009 Aston Martin Cygnet Concept,2008 Aston Martin V8 Vantage N400,2008 Aston Martin DBS Racing Green,2008 Aston Martin DBS Lightning Silver,2008 Aston Martin DBS Infa Red,2008 Aston Martin DBS,2008 Aston Martin DB9 LM,2007 Aston Martin V8 Vantage Roadster,2007 Aston Martin V8 Vantage N24,2007 Aston Martin V8 Vantage,2007 Aston Martin V12 Vantage RS Concept,2007 Aston Martin DBS,2007 Aston Martin DB9 Volante,2007 Aston Martin DB9,2006 Aston Martin Rapide Concept,2006 Aston Martin DBRS9,2005 Aston Martin V8 Vantage,2005 Aston Martin DBR9,2004 Aston Martin Zagato Vanquish Roadster Concept,2004 Aston Martin Vanquish S V12,2004 Aston Martin DBR9 Prototype,2004 Aston Martin DB9 Volante,2004 Aston Martin DB9,2003 Aston Martin DB AR1,2003 Aston Martin DB7 GT,2003 Aston Martin AMV8 Concept Car,2002 Aston Martin DB7 Vantage Zagato
Note:
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