As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LT BATT FAULT IN FLIGHT. MAINTENANCE PERFORMED OPS CHECK OF SYSTEM IAW EMB 170 MM 33-51-00. THE A/C WAS ROUTED TO A HANGAR THAT NIGHT FOR TROUBLESHOOTING. MAINTENANCE REPLACED GS0266 AND C/P P0546 IAW EMB 170 SWPM 20-41-20 AND 20-50-10.