As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKE OFF AND INITIAL CLIMB, TAI INDICATION ENG #2 INTERMITTANTLY WENT BLANK, TO AMBER, TO GREEN, SEVERAL TIMES. ENG ANTI-ICE SWITCH VALVE POSITION WAS DIM AT ALL TIMES. GROUNDED - YES. #2 ENG TAI COWL VALVE R&R PER B737-800 AMM 30-21-00. OPS CHK GOOD.