As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE FIRE PROTECTION PANEL ENGINE #2 FAULT B ADVISORY LIGHT REMAINED ILLUMINATED AT ALL TIMES. MAINTENANCE TROUBLESHOOTING DISCOVERED THAT THE WIRING BENEATH A CLAMP AT THE HYDRAULIC SHUTOFF VALVE HAD BECOME CHAFED. WIRES 2600-68C, 2600-W15A AND 2911-3A-20-2 REQUIRED SPLICING. THE AFFECTED SYSTEMS WERE TESTED SERVICEABLE AND THE AIRCRAFT WAS SUBSEQUENTLY RELEASED FOR SERVICE. (TC# 20190423008)