If you can find the vendor and part number, the vendor should have the spec's for that part. My Jandy sensors range from 19.898 K ohms @50deg F to a low of 5.327 K ohms @104 deg F. The one I have show 15.314 K ohms @60 deg F. So it is fairly close to your reported number. I haven't seen many complete failures so it could be something else.