P0528 Fan Speed Sensor Circuit No Signal???
P0625 Generator Field Terminal Circuit Low???

Can anyone give any insight to what these codes mean? How can i fix these codes?

 

What vehicle is this on, and what are you using to read those codes? Is something not working right?

 

F 150, 2007, 5.4L.
Edge Evolution read the codes a couple days ago.

Updated Edge programer yesterday (its been a year or 2). Put truck back to stock and then reloaded truck back to level 2. codes have not popped back up since. But for last two months can hear what is like 2 small mice fighting. cant hear it during idle but around 40 MPH i hear this during accelerating. Replaced serpintine belt with gatorback. checked all pulleys. They all seem fine. Can't figure out what the noise is? sounds like bearings squeaking.