As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE #2 ANTI-ICE REMAINED BRIGHT BLUE ACCOMPANIED BY AMBER TAI LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED B737-800 FIM 30-21 TASK 804. NO FAULTS FOUND. GROUND VERIFICATION OF #2 ENG COWL ANTI-ICE VALVE SUCCESSFUL. RESTORED #2 ENG ANTI-ICE VALVE PERB737-800 AMM 30-00-00-440-803.