Conditions for Running the DTC

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

B2AFF

System voltage = 9 - 16 V
BCM is awake and communicating
HVAC system and blower motor are ON
DTCs B2B00, B2B01, B2B02, B2B03, B2B0B, B2B0C are not set
Outside Air Temperature filtered value is less than 30°C (89°F)

B2B00

System voltage = 9 - 16 V
BCM is awake and communicating
HVAC system and blower motor are ON

B2B01

System voltage = 9 - 16 V
BCM is awake and communicating
HVAC system is OFF