As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER CLIMBOUT AND PASSING THRU CLOUD DECK CLEAR ABOVE, TURNED ENGINE ICE OFF, NR 1 ENGINE COWL VALVE OPEN LIGHT STAYED ON WITH THE AMBER TAI INDICATION ON UPPER ENG N1, ACCOMPLISHED QRH. ACFT GROUNDED. R & R THE TAI VALVE, OPS CHECKED NORMAL AND OK FOR SERVICE REF AMM 30-21-11-400/801.