Conditions for Setting the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
B0283 02
The HVAC control module detects a short to ground in the relay coil control circuit.
B0283 05
The HVAC control module short to voltage or an open/high resistance in the relay control circuit or an open/high resistance in the relay coil ground circuit.
B0283 06
The HVAC control module detects a short to ground or an open/high resistance in the relay coil control circuit or an open/high resistance in the relay coil ground circuit.