Answer Hello RBF. If the oven sensor WB21X5301 is bad in the unit, the oven will not heat properly. It should read around 1100 ohms at room temperature. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Tuesday, December 20, 2011