JD 4310 Fault code 2 reverse pedal

[disco]

Need your help!!!
My 4310 has alot of hours. Getting close to 5000 hrs. Never had this problem. Of course happens when a hay customer drives 120 miles to get to my place. Tractor was running fine. Moved 20 round bales out of the barn to load. Shut off tractor to talk to driver about how he wanted them loaded. Started right up and wont move an inch. Flashing 2 shorts and 2 long lights. All wires are good. Nothing blocking return of pedals. Disconnected battery. Checked all fuses. What I have learned in my research is that it is Reverse Pedal Potentiometer. Code 2. Thinking might be wore out. Should I try to recalibrate? Everything I have read says cant recalibrate if code is flashing.
Thanks Paul

 

[radios1]

some of the codes are listed here. https://www.tractorbynet.com/forums/john-deere-owning-operating/378893-4310-fault-code-help.html

 

[radios1]

some of the codes are listed here. https://www.tractorbynet.com/forums/john-deere-owning-operating/378893-4310-fault-code-help.html here's a guy that fixed the same problem. https://www.tractorbynet.com/forums/john-deere-owning-operating/219587-4310-fault-code-help.html

 

[disco]

Thanks for the replies. Today unhooked wire harness from each pedal hoping flashing light would turn off. No go. Gonna stop by deere tomorrow.