As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE AMBER TAIL LIGHT ILLUMINATED, WITH THROTTLE AT IDLE LIGHT WAS STILL ILLUMINATED. ACFT GROUNDED. REPLACED NR 2 ENGINE INLET COWL THERMAN ANTI-ICE VALVE IAW AMM 30-21-11. SYSTEM OPS CHECK AND LEAK CHECK GOOD. VERIFIED AMBER TAIL LIGHT EXTINGUISHED DURING IDLE ENGINE RUN.