Trouble codes p1400, p0000, and c0000???

[newstylecustoms]

I have an 02 4 door with the 4.0L. Not long after I bought in May 07 it started throwing these codes (Scanned with a Scangauge II). I jumped to the conclusion I should replace the DPFE sensor and did. The codes went away for a week or so then came back. I cannot afford to take it to Ford, I just don't know what else to look at or change.

Any help is much appreciated.

Thanks
Matt

 

[newstylecustoms]

Anyone?

 

[newstylecustoms]

Thanks for all the help, I replaced the DPFE sensor again and the light is off for now.