The thermometer sensor and circuitry might be perfectly ok, still the 452 number might be a single digit gone bonkers in the panel, so that data being transmitt

The thermometer sensor and circuitry might be perfectly ok, still the 452 number might be a single digit gone bonkers in the panel, so that data being transmitted (maybe also recorded?) is ok while the readout is plain wrong. A human acting according data being shown there might react very differently from someone reading the temperatures log. Sometimes software problems can be awfully subtle.