As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB RPM 1050 OUT OFF ENGM, WE EXPERIECED HIGH TOURQE ON ENGINE NUMBER 2 ABOVE FLIGHT LEVEL 180. SHUT DOWN ENGINE NR 2 AND RETURN TO LAND ACCORDING TO COMPANY PROCEDURE. DOWNLOADED FDR PCU REPLACED AFTER TROUBLESHOOTING AIRCRAFT RELEASED TO SERVICE.