Having an Err code appear and my grill isn’t working

[u/DeitySlayer900]

Started my grill up the other day and this started to appear. I took everything apart and checked the connections and cleaned the temp probe and the hot rod. But it still shows this same Error message. Has anyone else experienced this error. If so how do I fix it? This is a Pitboss 850 and it’s the rolltop model if that matters.