Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
B0163 02
The HVAC control module detects the sensor signal out of range. The signal voltage is less than 0.1 V for more than 50 ms.
B0163 05
The HVAC control module detects the sensor signal out of range. The signal voltage is greater than 4.9 V for more than 50 ms.