As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE MASTER CAUTION LIGHT, OVERHEAT/DETECT LIGHT, AND CARGO DETECTION SUPRESSION FAIL LIGHT ILLUMINATED WHILE EN ROUTE FROM IAH TO SJC. THE AIRCRAFT WAS DIVERTED TO PHX WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NO EVIDENCE OF FIRE. THE FIRE AND SMOKE DETECTION SYSTEM WAS TESTED IAW MM 26-16-10 AND FOUND TO BE WORKING NORMALLY.