As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE PILOT WERE DOING THROTTLE MOVEMENT CHECKS, THEY NOTICED THAT HYDRAULIC PRESSURE GAUGE NEEDLE WERE MOVING WITH THE THROTTLE. UPON TROUBLESHOOTING, FOUND THE LT MAIN BATTERY GROUND TERMINAL WAS MISSING & THE ATTACHMENT POINT (EP1) WAS DETERIORATED. TERMINAL END AND GROUND LUG REPLACED. OPERATIONAL CHECK CARRIED OUT, FOUND SERVICEABLE.