Front Defrost HVAC & Code 43

Hi all. I got a used 2008 Prius a few weeks back and am really enjoying it. However, I noticed that the front defrost wasn't working well, having to drive with fog on the inside of the windshield. Even with the AC on and set to front defrost, it takes a long time, a good 20 minutes before it clears. I ran the diagnostic function and got code 43 on the display, relating to the servo motor. Looking under the dash, I can see and hear the upper servo moving but something is still wrong, it doesn't seem to move fully the other direction to allow air out the top of the dash by the windshield. I have floor and vent air, just nothing out of the very top.

Can anyone provide insight on what steps I should take going forward? This is all still new to me. Thanks.

 

Thanks for the link to that thread. I'm getting a handle on how to get up there and pull those out. I was messing around and unplugged the lower one. Naturally, I have more codes now. I went to read the codes in a cheap OBD2 scanner and there's no body/HVAC codes listed. Is there any way to clear those codes aside from disconnecting the battery? I'm wondering if I clear the code, maybe the servo will try to move again and can limp me through winter since I don't have a garage.