I have a GFCI outlet which is testing wierdly. On one of the plugs, one prong tests hot and the other does not (using a Voltaware). On the other plug, both prongs test hot. The other outlets on the same circuit test fine. I reversed the black and white wires and nothing changed. Any ideas? Will replacing the GFCI outlet resolve the problem?
A non-contact tester might give you a false-positive on the neutral in some cases. Try testing the outlet with an outlet tester which will indicate if the hot/neutral are switched or open. Alternatively you can use a multi-meter to test it. If you are in the US, you should get ~120VAC between hot and neutral, but 0VAC between neutral and ground if the outlet is wired correctly.