Hey the other day i was messing around in my truck going down a dirt road with a couple puddles and stuff..... about 2 hours later after i left i was driving my truck when the service engine light came on.. The code is p1409.... EGR did offroading mess something up? or is it a easy fix like something loose? i have a 1999 f150 v6 2wd thanks

 

Is it EGR insufficient flow,or excessive flow?
what does P1409 exactly mean,I can help you better if you describe it more.

 

this is all i know

P1409 = EVR solenoid unplugged or defective, defective PCM, or there is an open circuit between between the PCM and the solenoid.

 

Umm, yeah, that's the exact answer I gave you on a different forum....

 

yes i know i was using the information you gave me so some one could help me figure out the full problem and what might of happened

 

check to see if you got dirt or water into the egr valve and it is sticking open or shut

check to see if everything is plugged in (sometimes connector locks break when you disconnect them)


check the wires at the connector...tug lightly on each wire seperately to see if it comes out of the connector

 

The code means that the PCM is sensing an open in the EVR circuit.
This is what i recommend you do,disconnect the EGR vacuum regulator electrical connector and with a Voltmeter check resistance across the terminals at the EVR.
If you get no continuity,EVR has an open internally,replace it.
If you do get continuity,then disconnect battery then PCM.find out with two pins at the PCM connector are the EVR and check for continuity from PCM to EVR and both wires.
If Both are ok,then PCM is bad.
Simple,isnt it?
Hope that helps

 

I had a p1409 code and I ended up replacing my EGR solenoid valve. Valve apparently had become gummed up and was sticking open (coil resistance was within spec 20-40 ohms). Cost about $25.