Strange issue with the temperature sensor: the oven temperature has been higher than set for a while (set oven to 375, it holds steady at 450, etc.)/ Recently it just refused to run at all, showing an F3 error.
So I pulled the temp sensor and checked resistance. It was a completely open circuit (infinite resistance on every scale).

I'm just confused because it seems to me that if the sensor was underreporting the temperature, that would mean too little resistance, right? And so I'd expect it to eventually fail to a shorted circuit or at any rate way too little resistance. Is it reasonable to expect it to fail to open circuit, or am I just not getting a good reading with my multimeter?

Thanks, ThatGuy. What was confusing was that the probe seemed to have been giving too low a resistance (as the actual oven temperature was higher than set), so I would have expected it to keep progressively moving toward completely shorted. But it seems to be completely open now, which is the opposite direction.

Just wondering if this situation (resistance too low > failed open) was reasonable to expect, or should I assume I haven't gotten a good resistance reading?