As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 0836 - DURING POWER UP ON PHX RUNWAY EN ROUTE FOR LGB, THE FORWARD ENTRY DOOR WARNING LIGHT ILLUMINATED, REJECTED TAKEOFF AT 64KTS. MAINTENANCE REMOVED AND REPLACED THE FORWARD ENTRY DOOR WARNING SWITCH, OPERATIONAL TEST WAS GOOD IAW BMM 52-71-11-201.