C28 STVA problems 600 k3

Hi. I recently purchased this gsxr 600 k3 with the FI light on and a C28 error code showing when in dealermode. When i opened up to see whats under the tank i found theres a problem with the STVA, which there should be according to the code. Theres also a beeping/squeeking sound. Ive been googling the problem, but without finding anything thats fully applicable to my problem.

I filmed the STV while starting up:
I grately appreciate any thoughts shared on the matter.