Cannot answer your question directly, it does seem a little low but that depends on the ambient temperature.
The sensors are not manufactured to a tight tolerance.
Hold the sensor in tightly in your palm, monitor the sensor with a meter.
The resistance should rise to 1140 ohms plus or minus 70 ohms.
I used the 70 ohms as most stoves allow a 35 degree control offset and 1 degree of change is 2 ohms.

I am assuming that the new probe did not fix your problem.
How do you know that it is not getting to the proper temperature?

A common cause of this is a blown element.
During preheat most units use both bake and broil elements, some units also switch back and forth between them.
Also many units now also switch back and forth during the bake, this is a way to keep the temperature consistent throughout the oven.

Perhaps someone else will be able to give you hard data on your question about sensor specs.

Note if you are using separate oven thermometer in the unit to measure the temperature where it is put can make a huge difference. Also a sensor with low resistance runs the oven hotter.