Hello, friends!

The speedometer needle on my 2003 g35 (193k miles) got stuck at 29 mph, I put cluster into diagnostic mode and it's the only gauge that isn't moving.
I'm currently driving with speedometer app, which works surprisingly well but I'd like to know if there something I can do myself to fix it?
The only fault code is the knock sensor, which I had on for longer than I'm proud to admit

Thank you!

 

I read about someone using a strong magnet to move the needle. Maybe that might unstick it?

 

I think I've seen that trick to move gas gauge needle that fell below "E" mark, I'll definitely try that, thanks!