My oil pressure guage is always on "0" and the red warning light sometimes comes on too, every now and then the guage will move up ever so slightly, but no matter wether I am driving, reving or idle, it does not move, I checked my oil and it is ok, what could be wrong??? do I have and oil pressure problem, or is my guage faulty??? and is it repairable???

thank you, Aaron.....

get a replacement Oil Pressure Sensor