If the level in the body dips, depression ahoy bells start ringing in your subconscious, and it has to kick start production pronto. Which might not be possible depending on the reasons for the shutdown. Here is a crisis situation that is going to have a knock on effect on 40 billion cells, so it isn't a minor matter. So you have a gigantically powerful and fast computer system with a programmed duty to rectify this crisis situation. Only it's spun through the standard options to get PEA levels up, and no joy.
Second step takes nano seconds.
Check all memory databases to find a potential alternative solution. You were three years old, the doctor gave you an injection and you cried your eyes out. So you were bribed with a square of luscious chocolate. So end of tears and you are happy once more. Simple memory, lost in the neurological junkyard.