escape p1409
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New User
Joined: May 2013
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escape p1409
im getting this code back i changed egr soleniod then iac valve then cleaned the dpfe senor then put and new gasket behind the egr valve and replaced most of the vacum hose and this code will not go away so now what to i dont wanna keep throwing parts at it although i feel what i have done have done so far was a good idea cause the truck runs/idols much better but that
dang code
dang code
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thanks for your reply here the p1409 just say circiut malfunction after reading about the p1409 and related issues it seemed like changing the solinod was best place to start so i did with little change then i cleaned the dpfe sensor still no change it got better after i changed most of the vacum lines but the lihgt still wont go out should i change the dpfe sensor i also read the egr valvues themselves dont go bad but these sensors do
Posting Guru
Joined: Feb 2002
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From: Warren, MI
I haven't worked on a EGR system since my '97 Ranger but as I recall you'll need a hand vacuum pump as well. You should have a AllDataDIY account for info such as how much applied vacuum equals how much voltage specs and other general info. IIRC, the input is 5V but output varies with vacuum.
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Hotshot
Joined: Jan 2004
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From: St Louis
You need to properly diagnose the control circuit for the EVR solenoid and quit the "parts swapping".
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could my egr valve be sticking and if so should clean it or replace i read online that those dont go bad and if cleaning it how in the world do i get off that sucker is really on there a way to clean it while its still on the truck once you dismount it fron the intake it does kinda sway back out of the way
Posting Guru
Joined: Feb 2002
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From: Warren, MI
could my egr valve be sticking and if so should clean it or replace i read online that those dont go bad and if cleaning it how in the world do i get off that sucker is really on there a way to clean it while its still on the truck once you dismount it fron the intake it does kinda sway back out of the way
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Joined: Jul 2019
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These connectors are available for replacement as the wire was broke right at the connector.
I just stripped mine back about for now to get a little solder on it to ensure all was good. If I have any issues later on I'll replace the connector.
Thanks Gary for sharing your experience .. I hope this helps someone else out there.
Hotshot
Joined: Jan 2004
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From: St Louis
It doesn't take an hour plus you'd then have to reprogram everything. There are better ways.
Cargo Master
Joined: Jun 2003
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From: Ardenvoir, Washington
Reprogram ??? I have done this battery disconnect on my 2015 Superduty a few times now and no problems.. Ford dealer told me to do it when I was getting error messages concerning my gas cap.. Disconnecting the negative side of the battery fixed it.. What happens when you change out your battery.. you have reprogram the computer..? I think not !