The disclosure describes a tube pressure sensor to measure penile tumescence which may be used in a therapeutic penile tumescence control system. The system senses penile pressure and sends the information to a stimulator that is capable of stimulation therapy to control an erectile state, thus treating sexual dysfunction or, more specifically, erectile dysfunction. Measuring penile tumescence pressure is accomplished through the use of a tube placed within the urethra of the penis and attached to a module implanted within the bladder. Pressure on the tube generates an electrical signal that is sent wirelessly to an implanted stimulator connected to a lead positioned near pelvic floor nerves that stimulate erections. An external device may be used to wirelessly send information to the implanted stimulator to start or stop stimulation in order for the patient to conduct normal sexual activity. In addition, pressure information and stimulation information may be recorded and reviewed by a physician for continued therapy monitoring.