As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 COWL VALVE OPEN LIGHT (BLUE) DOES NOT LIGHT UP. REPLACED BULBS WITH NO CHANGE. GROUNDED - YES. FOUND "ENGINE 2 CONTROL" C/B OPEN (P18-3 B5), RESET PER 737-900 AMM 20-60-01. PERFORMED ENGINE COWL ANTI-ICING OPS TEST, OPS CHECKED GOOD. C/B REMAINED CLOSED DURING AND AFTER CHECK.