Mitsubishi MM40SR

Hi all,

I have read some of the posts from years back that talk about the Grey Market MM30, MM40, and MM50. Hoping someone can help me. I am getting error code E-22 on the interference display. I have tried everything to make it go away, chased wires, removed sensors and put back on but still it stops the boom extension and retraction completely. Can still track and rotate, also can move bucket back and forth but can't use the boom.
I do know that the red button under the seat...

Mitsubishi MM40SR

Mitsubishi MM40SR