As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG 2 BLUE COWL VALVE OPEN ANNUNCIATOR AND AMBER TAI ANNUNCIATOR REMAIN ILLUMINATED AFTER ENGINE 2 ANTI-ICE SELECTED TO OFF. GROUNDED - YES. REMOVED & REPLACED #2 ENG COWL TAI VALVE REF B737-900 AMM 30-21-11, OPS CK GD, LK CKS GD.OKAY FOR CONT'D SVC.