Hi, I have a 2001 prius with warning light, Break light and check engine light on, DTC: P3125.Vehicle is running perfect but it is not moving, Top speed 1 mph only for a minute on D position, If you move the shifter to R position doesn't move and turns off unless you keep push on gas pedal, Voltage of accessories system while ruining is 13.93v. HV battery voltage is 303v while is ruining,it has a new set of cells ( new generation of battery's) i have replace inverter converter from a good running prius i had, also i have replace the HV Control computer located under front passenger foot but after replacing HV computer car did not start so i couldn't check the computer, with all this information could any one give me some idea what to do and what do you think, by the way my next plan is to replace transmission, If you know how to check the transmission on this vehicle to see if thats the problem or not will be a BIG help thank you very much in advance.