As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A GROUND RUN WAS PERFORMED ON THE AIRCRAFT PRIOR TO A SCHEDULED LAUNCH.UPON ENGINE SHUTDOWN THE MECHANIC NOTICED THAT THE "HYDRAULIC PRESSURE LOW" LIGHT ON THE RIGHT HAND ENGINE DID NOT ILLUMINATE.DURING TROUBLE-SHOOTING, IT WAS DICOVERED THAT THE RIGHT HAND HYDRAULIC FLOW SWITCH WAS STICKING, AND CAUSING AN INTERMITTENT INDICATION ON THE CAUTION PANEL.THE FLOW SWITCH WAS REPLACED AND THE AIRCRAFT PUT BACK INTO SERVICE.