Error codes Po401 and Po420 for 96' intrepid

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Error codes Po401 and Po420 for 96' intrepid - 10/17/2007 1:34:42 AM    ALXcrew   Posts: 3 Joined: 10/17/2007 Status: offline I am seeking some help from anyone, I have recieved the error codes P0401 and P0420. Can anyone help me with this problem. It would be greatley appriciated. Post #: 1

RE: Error codes Po401 and Po420 for 96' intrepid - 10/17/2007 1:52:02 AM    kurts2   Posts: 554 Joined: 10/27/2006 Status: offline Here is a link for future use: http://www.actron.com/code_lookup.php P0401 DTC Definition: EGR Flow Insufficient P0420 DTC Definition: Catalyst Efficiency Below Threshold (Bank 1) (in reply to ALXcrew) Post #: 2

RE: Error codes Po401 and Po420 for 96' intrepid - 10/17/2007 1:59:32 AM    ALXcrew   Posts: 3 Joined: 10/17/2007 Status: offline Thanks for the reply kurts2, would you or anyone els have any sugjestions as to fixing this problem. I have considered replacing the O2 sensors.  Not shure if doing this will fix both problems. (in reply to kurts2) Post #: 3

RE: Error codes Po401 and Po420 for 96' intrepid - 10/21/2007 8:07:16 PM    ALXcrew   Posts: 3 Joined: 10/17/2007 Status: offline Would anyone know if replacing the oxygen sensors first would be the best rather than replacing the egr valve first.  I am trying to get rid of the check engine light and i have pulled the codes P0401 "EGR Flow Insufficient" and P0420 "Catalyst Efficiency Below Threshold (Bank 1)" (in reply to ALXcrew) Post #: 4

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