Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
B0163 02
The input signal is out of range. The HVAC control module detects voltage less than 0.1 V on the temperature signal circuit.
B0163 05
The input signal is out of range. The HVAC control module detects voltage greater than 4.9 V on the temperature signal circuit.
B0183 02
The input signal is out of range. The HVAC control module detects voltage less than 0.1 V on the solar sensor signal circuit.
B0183 05
The input signal is out of range. The HVAC control module detects voltage greater than 4.9 V on the solar sensor signal circuit.
B1405 02
Clocked supply for multi zone sensor is shorted to ground.
B1405 05
Clocked supply for multi zone sensor is shorted to voltage or open.