For the last 15 years or so I've had dreams with malfunctioning elevators. Sometimes they break down and I find a way to climb out, sometimes I'm waiting for an elevator and the door opens only to have the elevator swing back and forth so i have to jump over the black nothingness to get into it, sometimes I'm inside and it's swinging and then it falls only to stop suddenly and I have to climb out. I never actually fall all the way down or get hurt in any of these dreams though...I think it's more about the feeling of not being in control or something. Regardless, it has made me hate elevators in real life, almost to the point of a phobia.
For the last 15 years or so I've had dreams with malfunctioning elevators. Sometimes they break down and I find a way to climb out, sometimes I'm waiting for an elevator and the door opens only to have the elevator swing back and forth so i have to jump over the black nothingness to get into it, sometimes I'm inside and it's swinging and then it falls only to stop suddenly and I have to climb out. I never actually fall all the way down or get hurt in any of these dreams though...I think it's more about the feeling of not being in control or something. Regardless, it has made me hate elevators in real life, almost to the point of a phobia.
I think you hit the nail on the head, definitely a control or loss of power phobia.