As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER 30 MINUTES IN CRUISE FLIGHT, TOT SUDDENLY WENT TO 840 CA, PRECAUTIONARY LANDING WAS MADE AND MAINTENANCE WAS CALLED. TOT SYSTEM WAS TESTED AND FOUND TO BE WORKING NORMAL. NO EXTERNAL DAMAGE WAS NOTED TO ENGINE. ENGINE WAS R & R AND SENT TO ENGINE SHOP FOR INSPECTION.