Hi. I have 2009 murano and it went to limp mode not exceeding 45 miles an hour( which I found out called lump mode). The engine light came on with the error code p1777. I checked the code and it said the stepper motor in transmission valve body. I changed the stepper motor and new filter and new cvt oil. I discounted the battery in order to reset the error code. I started the car and now the car didn't move at all. I ordered a rebuilt valve body online and I am changing now. On the package for valve body, there is a note that I need to reprogrammthe valve body. Any suggestions on how to do this or anything else that help me please.