egr passage way in engine plugged with carbon. will off of engine, make sure egr is ok.
2001 ford windstar has code PO401 erg insufficent flow.
I had the same thing happen to my car that code means insufficent egr flow. You have to replace the egr valve.
Whenever it fails.
Where is located pressure sensor on Chevy Malibu 1999
no the egr valve has a big effect on the engine,it is controlled by the pcm.
po405---egr flow sensor low input-- this basicly means that the egr or connections to it need attention. remove and clean egr to get carbon build up out of it. also make sure it is clean at motor side where it mounts to engine, if no carbon replace egr valve.
Is it built in to the egr next to the brake fluid reservoir?
Trouble code P0401 means: Insufficient EGR Flow Detected Replace the EGR valve
P0401 = Insufficient EGR Flow
Driver side on top of intake by firewall.
Code p1404 is an EGR position sensor error. This can be caused by a bad EGR valve or computer software update.- TechJK ------------
To change the EGR valve on a Chevy Malibu, first, ensure the engine is cool and disconnect the battery. Remove the EGR valve by unscrewing the bolts that secure it and detaching any electrical connectors and vacuum hoses. Clean the mounting surface on the engine, install the new EGR valve, and reconnect any hoses and electrical connectors before securing it with the bolts. Finally, reconnect the battery and start the engine to check for proper operation.