Kubota svl 95-2s problem please help!!

I own a svl95 has about 330 hours on it nice and very strong machine. The problem I am having and still having is with the def system. I am getting codes e9521 And e9602 And the machine reduces power and goes into a limp mode. The codes are def and scr system related claiming def fluid deteriorated etc. I have drained the def tank, cleaned , and replaced fluid. Still does the same thing. I am assuming one of the sensors has some of the flaked up def fluid on it causing the problem but really...

Kubota svl 95-2s problem please help!!

Kubota svl 95-2s problem please help!!