According to Osho, yes: a subtler consciousness exists that can separate from the physical body. The only way to know it is while alive, through the direct experience of being outside the body. This out-of-body awareness arises spontaneously for many—often during grave illness or injury—and at death it happens anyway, though then we cannot observe or report it.
There’s a part of you that can step out of your body and still be aware, and people sometimes feel this during serious illness or accidents.