NIssan GTR Gearbox Problem

Last week we have a car with a weird gearbox problem.

 The car can be drive perfect but sometime when u stop the car at the trafic light the gear will stuck at 3 rd gear or 2nd gear.when u presss the GAS pedal it will move very slow. The BEST PART was no check light/gearbox light or 4wd appear. When we check with the consult/diagnotic computer theres no fault code :(  so its about time to brain storm :)

Glad we manage to fix this within 2 days . AMIN :)

Check out the picture below.. stuck at 3rd GEAR with 0 kmh speed and   1000 RPM ( No check light )