Description
OBD-II Trouble Code Description for P0401 Kia
Exhaust Gas Recirculation Flow Insufficient Detected
What does this mean?
OBD2 Code P0401 Kia 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 Kia code means that OBD detected an insufficient amount of EGR.
Symptoms
Possible sumptoms of OBD code P0401 Kia
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 Kia
A code P0401 Kia 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 Kia:
2013 Kia Sorento,2013 Kia Provo Concept,2013 Kia Niro Concept,2013 Kia K9,2013 Kia Cross GT Concept,2013 Kia Ceed SW,2013 Kia Ceed,2013 Kia Carens,2013 Kia CUB Concept,2012 Kia Soul,2012 Kia Rio,2012 Kia Ray,2012 Kia Picanto,2012 Kia K2,2012 Kia Grand VQ-R,2011 Kia Sportage,2011 Kia Sorento,2011 Kia Pro Ceed,2011 Kia Optima Hybrid,2011 Kia Optima,2011 Kia Naimo Concept,2011 Kia KV7 Concept,2011 Kia GT Concept,2011 Kia Cadenza,2010 Kia Venga,2010 Kia Soul,2010 Kia Sorento,2010 Kia POP Concept,2010 Kia Forte Koup,2010 Kia Forte,2010 Kia Ceed SW,2010 Kia Ceed,2009 Kia VG Concept,2009 Kia Soul,2009 Kia Optima,2009 Kia No3 Concept,2009 Kia Magentis,2009 Kia Borrego,2008 Kia eco ceed Concept,2008 Kia Pro-cee-d,2008 Kia Picanto,2008 Kia KOUP Concept,2007 Kia cee-d,2007 Kia Rondo,2007 Kia Kue Concept,2007 Kia Carens,2006 Kia Sportage,2006 Kia Spectra
Note:
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