Alarm Event PIDs
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The BCM has PIDs available that show what caused the last alarm events. The 4 BCM alarm event PIDs are ALARM_EVT_1 through 4. The cause for the most recent alarm activation is always listed in the first alarm event PID. These PIDs display what caused the alarm to activate and can be a very useful tool when trying to identify the cause of a false alarm activation.