As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT PRIOR TO START OF ENGINES RECEIVING A LEFT HOT BATTERY INDICATION. THE BASE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE LEFT MAIN BATTERY TEMP SENSOR WAS DEFECTIVE. THE BATTERY TEMP SENSOR WAS REMOVED AND REPLACED WITH A NEW SENSOR. OPS CHECKS SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE