Conflicting information with the display of icons and warning horn signal.

I'd say to address it based on the warning horn, which is a CRITICAL FAULT warning.

There are as you know a number of possibilities: Engine OVERTEMP is first on the list.

The Smartcraft warning tends to make me think of a water in fuel scenario. How long since the fuel filter (with sender) was replaced (Part# 18458T4)?

Of course, PRINTOUTS of the RUN HISTORY and FREEZE FRAME (Fault) History would help IMMENSELY.