Hey guys. I have a 01 f-150, 4.6, 2wd, auto. Long story short. The check engine light has been on for some time now. It will throw the p1409 and later it will throw the p0409 and sometimes it will say that the monitors are not ready. Anyhow, my brother and I have done all the tests for all the EGR related items and all seems ok with them. We are going to try to find another PCM. Called Ford earlier and they said as long as the thirteen digit code was the same on both PCM's it would be fine. I did forget to ask however, what all year models are compatible. Any info on any of this would be greatly appreciated.

Thanks

 

FIRST OFF , I am not trying to insult but you are flying off on something you don't know anything about.
You don't need a PCM and if you did, it would need to be programmed to match your original.
The code 409 /1409 are the same.
It is refering to a malfunction of the EGR vacuum regulator valve and no other part of the system.
The valve is a simple electrically operated three port device that passes vacuum to the EGR valve.
Four possible problems could occur.
1. the PCM can't operate it due to a fault in the wiring/ plugup.
2. the valve has an open solenoid winding.
3. the valve is frozen and/or it's filter is plugged.
Here is how it works.
When requested by the PCM to open, it passes vacuum to open the EGR valve.
Once the EGR is open, then needs to close, the gate valve must let air in from outside or the EGR will hang open and cause other drivability issues.
Measure the valve winding resistance to be sure is not open.
Make sure there is manifold vacuum present for gating.
Test for standing voltage on the red lead as it is common to a number of other sensors.
The PCM applies a ground to operate the valve.
A way to test if the valve works is to place a vacuum TEE in the line going to the EGR and road test with a vacuum gage.
When at speed between 45 and 60 mph and light throttle, the PCM will request the vacuum regulator to allow vacuum to pass.
If you see vacuum on the gage at that time and it drops to zero with application of a good amount of throttle, the system is working as it should.
BTW, it is normal to see the code 1000 until all systems are fault free and pass the all the pcm tests over a "number" of drive cycles before is clears it'self. You cannot clear this code with a scanner or reader..
As long as there is a fault with the regulator there will be a code 1000.
This code is not a fault code but an indicator of all systems' conditions.
Good luck. It's not a big problem.

 

Thank you for the reply, and I think I know a little. The PCM is not applying ground. Ran all new wires. Still no good.


Thanks for any help