As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT DIVERTED TO GJT WITH THE LOSS OF CONTROL OF THE NR 2 ENGINE TORQUE IN FLIGHT. MX REPLACED THE PCU, MFC AND FUEL PUMP WITH ALL ENGINE RUN CHECKS AFTERWARD CHECKING GOOD. MFC P/N 3244853-18, S/N C31148V, FUEL PUMP P/N 5008269H, S/N 2433.