GtrVnur

Hello Experts I have a serious problem with my "Nissan Skyline R34 GTR V-Spec II N1 Nur Edition". I was driving down the road and suddenly the rpm-counter in the dash show 0rpm, the the 4wd and lsd came on. When I started the car yesterday the rpm was still at 0, lsd and 4wd lights came on and the board computer couldn't show boost value. I've checked all the fuses and searched this forum - but with no luck at all. Any suggestions? Greetings from Denmark