2015 Rancher Power Steering issue

Hello all. I have a 2015 Honda Rancher TRX420FA6. I purchased it at a good price but it was definitely in an accident. The plastics don't line up well but it rides straight. When I got it the power steering light was on and it did not work. I did the reset procedure and it worked perfectly. Then I hit a rock with the tire pretty hard and the light came back on and P.S went out on me. I reset it , it works until I hit a rock again or there is a heavy load on the front end and I try to steer.
Any ideas where I should start? I want to fix it for good.