Information on diagnosing and repairing a DTC trouble code P0401 which is insufficient EGR (exhaust gas recirculation) flow.

Jan 21, 2007 · I used a scan tool and got a code for EGR insufficient flow or P0401. I REPLACE THE EGR VALVE AND GASKET (EASY) cleared the code and 40 miles later, the CEL was back.

P0401 and P0402 2000 Ford Taurus The check engine light on my 2000 Ford Taurus 24 Valve DOHC V6 came on and after scanning with an OBD2 Scan Tool, I received an P0402 (excessive EGR flow).

P0401 on a 2005 Freestar - 4.2L by mstonebu » Sun Feb 03, 2008 3:09 pm I’m one of those do it yourselfers who will scour the internet for information in an attempt to figure out how to do it myself.

May 17, 2017 · O2 Honda Accord 3.0 v6. New EGR and removed intake and cleaned everything thoroughly TWICE. Still getting the P0401. What am I missing?

Nov 11, 2016 · P0401 2001 Chrysler Sebring by ShadeTreeJoe » Fri Nov 11, 2016 6:27 pm Code is still present despite all tests showing an operable EGR system. 1) Solenoid ohms are 35.1; testable …

Mar 28, 2011 · P0401 never ending code by wml52 » Mon Mar 28, 2011 8:44 pm Several months ago my MIL lamp posted a P0401 code “EGR Insufficient Air Flow” The following parts were tested and …

P0401 by Zsoltar » Wed Aug 28, 2013 7:33 pm Hello, I am driving a 2006 Mazda 3 base model standard car. It was off the road for over a year, but finally had the funds to get it going again.

Nov 20, 2006 · P0401 on 97 Camry 4-cyl by cllewis » Mon Nov 20, 2006 3:45 am Got the P0401 code for the first time a couple months back; disconnected battery to clear code, CEL went out and didn't …

Dec 28, 2011 · Re: 2004 ford Freestar van, 4-2 L engine, OBD code P 0401 by HoldenOak » Thu Jan 05, 2012 6:49 am The stalling would not happen from clogged passages or defective DPFE. …