As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRBORNE RETURN AFTER HPSOV FAILURE. EMERGENCY DECLARED, NORMAL APPROACH & LANDING CONDUCTED. FOUND CONNECTOR ON LT HPSOV CONTROLLER LOOSE. CONNECTOR SECURED AND BLEED TEST CARRIED OUT. CHECKED SERVICE DETAILS AND FOUND NO CONTINUITY BETWEEN TERMINAL 1 AND A7 OF D2378B. FOUND WIRE BROKEN AT LUG. TERMINAL 1 AND 3 REPAIRED IAW SWPM 20-30-11 AND WDM36-11-61.