Have power but no movement on a 2009 Ruff and Tuff cart.
Code 12 I believe , is throttle fault - check that area.
I realize this is an old post hope how do you resolve this. I am having same problem. Replaced controller with a new Curtis 1268-5502 the fault did not disappear but the cart ran great for 6 months. It stopped a weeks ago I installed a rebuilt Controller it lasted for a day and stopped. I can’t determine if is the controllers or the cart. Curtis Tech support tells me that the fault light will clear itself if it is resolved. Thanks