Hey, Tallguy, I read your post where you wrote that replacing the inv pump did not clear the codes. I am having the same problem. I had P0A93 and P0c73 codes. I did not hear the pump running and did not see much turbulence in the tank. Afte replacing the pump, I was able to detect a slight vibration in the hose going to the pump, but still got the 2 codes. I think that the old pump was the same.
