2002 dodge ram 2500 5.9 cummins 6spd
The fuel gauge is not working properly. When I fill the tank it goes to full. Then it VERY slowly works it way down to about half a tank or so as I run completely out. So in other words when the fuel gauge shows half a tank there is not any fuel in the tank. Check engine light is not on but I pulled the codes to gain as much info as possible. P0234 according to haynes manual turbocharger boost limit exceeded. P 0463 High voltage detected at fuel level sensor. P1693? Not sure not listed in manual. Any ideas what might be causing Fuel gauge not to work.