As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON GROUND, RT ANTI-ICE ENGINE COWL VALVE LIGHT REMAINED ON. ACFT GROUNDED. RAN NR 2 ENGINE PERFORMED NR 2 ENGINE COWL ANTI-ICING OPS TEST IAW AMM 30-21-00-710-801, STEP 5(B) . TESTED SEVERAL TIMES. LIGHT WENT OUT. OPERATES NORMALLY IN ALL CONDITIONS. NO DEFECT NOTED.