As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DIVERTED DUE TO BLUE HYDRAULIC PUMP HAD A LOSS OF PRESSURE. PERFORMED TSM TASK 29-12-00-810A AND FOUND BLUE ELECTRIC PUMP PRESSURE SWITCH FIN 2074GJ AT FAULT. R & R PRESSURE SWITCH IAW AMM 29-12-17. OPS CHECK AND LEAK CHECK OK. FAULT NO LONER IN VIEW.