I have an AVH P3200BT with the AVIC U220 add on navigation. I have a positioning error so that I am given direction as I have passed through an intersection. I can't seem to correct this. I have reset the system. I have changed the position of the antenna. Anyone have any suggestions.

I have the same in dash unit with the AVIC-U220 add on. I have had the same issues as you have. I had to set my home address up by location because if I put my street number in I would be on the wrong end of my street. I have started up the unit and was positioned across town. It also has me off by 50 yards no matter where I go. Just directs me near by I have to find house number myself. I sent the unit back to Pioneer twice and there only response was it was a software issue. Another words nothing they could do. I then sent the unit back to the seller and with no problems mailed me back a new one. I am having the same problem, The unit stinks and is not worth the money. I have to eat the cost and wait for an update or something.

Accuracy issues are common with all 2010 Pioneer navi units.