As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORT AIR DEMAND PUMP OVERHEAT LIGHT ILLUMINATED. LIGHT STAYED ON WITH PUMP SWITCHED OFF. CREW REPORT THAT C HYD DEM PUMP EICAS MSG FINALLY APPEARED 5 HOURS AFTER TURNING THE SWITCH ON. ALSO OVHT LIGHT STILL ON. FOUND DAMAGED CONNECTOR (D2216) TO TEMP SWITCH AND DAMAGED CONNECTOR (D464) TO S28. REPLACED D2216 AT S317, SYSTEM CKS OK. ALL INDICATION NORMAL.