Most newer ovens use an oven sensor to keep track of the cycling temperatures, if your model has a control board then it has a sensor. Testing and replacing the sensor can be done from the front of the unit in most cases.
Start by opening the door and looking on the back wall of the unit. The sensor is located on the back wall in most instances.
If I had to describe the sensor I would say it look’s like a metal pencil of sorts.. This small rounded metal sensor is held to the back wall with two screws, removing the screws will let the sensor pull forward this will enable you to access the quick connect. Disconnect the sensor and replace.
If you are still trying to diagnose your ovens sensor you will need a volt meter to ohm the sensor. The oven sensor should read 1080 ohms at room temp.
If the sensor is off it can cause the control to have an error code, if the sensor test good you either have a bad control or wire harness issue. Investigating some of these sensor error codes myself I have found several wire harness cut from rubbing on the thin sheet metal over the years. Verify the ohm value before ordering parts, doing so will aid in proper diagnostics.