As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BLANK OUT ISI & STALL FAIL CAUTION, RUD LIMIT FAULT STATUS MSG APPEARED. ISI CB TRIPPED/RESET. OPS BACK TO NORMAL. A/C RETURN TO SERVICE. HOWEVER, THE FAULT RETURNED IN FLIGHT, A/C DIVERTED BACK TO AIRPORT FOR LANDING. CORRECTIVE ACTION: ISI REPLACED. (TC# 20180510011)