While removing the DPFE for inspection to troubleshoot P0401, I found what appears to be corrosion on the lower ports after removing rubber tubes. Why, what do I do to prevent it, etc?

Thanks

 

That is normal.
For every gallon of fuel you burn, a gallon of water comes out the tail pipe.

 

Are you sure you'll get agallon of water for every gallon of fuel burned? That would be equal amounts @ a 1-1 ratio. That would be 25 gallons of water for every tank of gas. Seems a bit much.

I'm scared to think of what the Hydrocarbons emissions would be!

Some of the byproducts of combusted fuel are sulfur and water vapors. This makes an acidic combination that does tend to eat away at things.

Good luck.

 

I think I've read it in a couple of different places now, but the plastic DPFE sensors that Ford started using a very unreliable.

A while back, I removed my aluminum DPFE sensor, turned it over so that the ports where facing up, and then loaded them up with WD-40. I let it sit for awhile and when I turned it over, the WD-40 came out very black.

That won't address your corrosion concern, but you may want to try cleaning your sensor out to see if that gets rid of your code.

 

I used Sea Foam on it. It appears to have done a pretty good job. Some of the lime/calcium buildup, not sure what it is? came out and some black stuff as well. Truck is running better and we'll see if the code comes back.

Thanks again.