As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENG ANTI ICE TURNED ON FOLLOWED BY A YELLOW TAI AND THE COWL VALUE LIGHT REMAIN BRIGHT DID NOT DIM. DID QRH THEN IT WORKED NORMAL. GROUNDED YES. TROUBLESHOT IAW FIM 30 21 00 810 802, OPS CHECK NORMAL, NO HISTORY 90 DAYS FAULT CONSIDERED INTERMITTENT. VERIFICATION FLIGHT SUCCESSFUL.