As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAXI FOR TAKE-OFF THE CREW HAS REPORTED "HYD3 LO PRESS" CAUTION MESSAGE APPEARED ON EICAS DISPLAY. THE AIRCRAFT RETURNED TO GATE. GROUND VISUAL INSPECTION REVEALED HYDRAULIC LEAK FROM THE RUPTURED SYSTEM 3 HYDRAULIC TUBE LOCATED IN NLG WHEEL WELL. THE TUBE WAS REPLACED, HYDRAULIC SYSTEM REPLENISHED, OPERATIONAL TEST PERFORMED.