If you are certain that the main issue lies with the freezer sensor and you have the necessary information, you can perform the following checks:

1. Inspect the wires and connections: It is possible that the wires related to the freezer sensor have been disconnected or damaged. Check that all the wires are properly connected without any specific breaks.

2. Clean the sensor: In some cases, dirt or deposits can interfere with the proper functioning of the sensor. Carefully clean the sensor and ensure that there is no residue or dust present.

3. Replace the sensor: If the issue persists after performing the previous steps, it may be necessary to replace the sensor. In this case, it is advisable to invite an experienced technician to your home or contact an authorized repair service to replace the sensor with a new component.