As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A BRIEF PERIOD OF SMOKE IS OBSERVED IN THE CABIN AND FLIGHT DECK WHEN THE #2 BLEED IS SWITCHED ON AFTER ENGINE START. SMOKE CLEARS AND NO ODOUR REMAINS. WATER FOUND IN THE ACM OIL SYSTEM AND OIL IN THE DUCT DOWNSTREAM OF THE ACM. ACM REPLACED.