Cat C15 SDP W900 Coolant Temperature Issue

I have a 2010 W900 Cat C15, I was driving down the road everything was perfectly fine until my fan kicked on and noticed my coolant temperature was rising and my oil temp was as well, I have a gauge scanner. I pulled over, did my check and there wasn’t any leaks and the engine wasn’t extremely hot nor was the coolant reservoir was boiling. So I closed the hood and start driving again. I was getting check light and stop light for (coolant temperature high). But then as I got back on the road the temperatures would go back to normal then jump to high temp then low then normal is was really weird. And it kept doing that until I got back to the yard. Has anyone had this problem before

 

I went over to the KW dealer bought a temp sensor replaced it and found a little cut on one of the wires that goes to the sensor I fixed that up. Started it up temperature seems to be fine at idle but won’t be able to really know until I get on the road tomorrow

 

I think that fixed the issue

 

It wasn’t the temp sensor but I changed it anyways because it was surprisingly only 45 dollars at the kw dealer. I think it was the wire that was cut temperature sensor connector wire
Drove 700 miles so far no issues