Strange Circuit codes.

Hi Gang,
I have a 1999 S-10. 4.3L.
Engine light came on and it gave me P0100. Mass Air flow. This is more of an FYI.

The other codes which I cannot find show me P07E5 and U25FA.
Anybody know what these mean?

Thanks for you help.
Arty

Googling P07E5 shows up as a possible transmission code. The second code doesn't even come up with a possibility on Google. Sounds like you want to find someone with a dealer level scanner to read it and that may be your only option.