I occasionally check my SES light because I have test pipes that keep setting off The code for cataltyic defficancy.. So I Just celar it for now untill I get my Uprev tune. But one more code came up today.. Engine Coolant tempeture.. I checked my coolant level and it was in the middle of Max and Min... What could this be?

 

Post the code

 

I cleared it already... Im going to keep an eye on the tempetuure gauge on the dash and see if it come up again.