As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG #2 ANTI-ICE VALVE LIGHT (BLUE) ON W/ ANTI ICE SWITCH OFF. AMBER TAI LIGHT ON. RAN QRH. PULLED THRUST LEVER BACK < 80% N2, LIGHTS WENT OUT. GROUNDED - YES. PERFORMED B737-800 FIM 30-21 TASK 804. FOUND TO BE INTERMITTENT FAULT. TESTED OK.