As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, NR 1 COWL ANTI-ICE VALVE STUCK OPEN. ACFT GROUNDED. COMPLIED WITH OP TEST OF THE NR 1 ENGINE COWL ANTI-ICING IAW AMM TASK 30-21-00-710-801. OPS TEST THE ENG ANTI-ICE 1 SWITCH SEVERAL TIMES- OP TESTS GOOD. ACFT OK FOR CONTINUED SERVICE.