As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS #2 ENGINE HP VALVE OPEN IN CRUISE FLIGHT FL260 1.3EPR 81.9N1 87.1N2 AND AT 1.49EPR 88N1 89.1N2. #1 HP VALVE CLOSED IN BOTH CASES, AND AS LOW AS 1.00 EPR. MAINTENANCE FOUND DISCONNECTED CONNECTOR 4000HA-2. RECONNECTED HP VALVE CONNECTOR AND TROUBLESHOT IAW TSM 36-11-00. TEST OK.