Nh l223 override

[buffaloracer]

I have a nh l223 skid steer that displays a red stop sign, yellow hydraulic cylinder and check information on the display board. It throws a 5511 code that means that the boom sensor is giving an illogical reading. All of the 3 of the buttons on the dash controls blink red and the operate button is dark. How do I override the system so that I can load it on a trailer and haul it to the repair shop? Thanks. Pete