P0A93 Error

While driving to work the other day I got the red triangle pop up on my dash and the check engine light came on. I checked the code and the only one showing was the P0A93 code. I checked the coolent bottle and I couldn't see any turbulance or movement at all. I went to the dealership and got the water pump for the inverter and installed it this morning. I added new fluid to the tank and the I pressed the power button twice. I could hear the pump running and i could feel the hoses vibrating. However, there was no movement in the tank and when i open the bleeder valve to bleed the system nothing came out. Any ideas as to what could be going on?

 

Well it turned out to be an air lock in the pump so the fluid wasn't actually reaching the pump. I had to "burp" the system to purge the air from the pump and then I was able to finish adding fluid and to bleed the air from system.