Bosch temp sensor unavailable. Need help finding alternative

[Sea]

This is my 1st post and I am grateful for this forum and any help.  I have a Bosch side by side fridge B20cs30sns/04 about 3 years old.  Freezer cold fridge warm.  Evaporator fan is working, damper is open and shutting but stays mostly shut and it checks good with meter as compared to specs I found on similar part.  The thermistor or temp sensor is “no longer available “.  Parts 12020249 -  labeled 0124 on the parts diagram.  I cannot find any specs on it. The tech sheet does not call out resistance.  Bosch is zero help.  One person promised to contact factory for spec but never called back. What do you pros do in this case?   My background is manufacturing aerospace engineering so I don’t have much electrical knowledge to fall back on.

thank you 

 

[Sea]

After thinking about it I am asking how one could go about choosing an alternate temp sensor without knowing the specs on the one I have.  I cannot see anything written on it and Bosch help line say they cannot help with finding exactly what type it is. 

[Alanna Farrell]

You're in a tough spot, and unfortunately, Bosch is notorious for poor support on parts info—especially for thermistors. Since the freezer is cold but fridge is warm, it does sound like a sensor or airflow issue, and if the damper is working and fan is running, the thermistor (temp sensor) is a prime suspect. In cases like this, pros often use a universal 10kΩ NTC thermistor (common for many fridges) as a substitute, especially when specs are missing and OEM parts are discontinued. Measure the resistance of the old sensor at room temp—if it's around 10kΩ at 77°F (25°C), a standard 10k NTC might work. Just confirm it's physically compatible and test it before buttoning everything up. If that fails, a cheap standalone fridge temp controller like an Inkbird can be a hacky but effective workaround.

[Sea]

Will try it. Thank you for advice