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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 231 (HVAC - Automatic) >> Diagnostic Information and Procedures >> DTC B2AEF or B2AF0-B2AF4 >> Conditions for Setting the DTC

Conditions for Setting 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.

B2AEF 

Circuit 7573 is shorted to ground

B2AF0 

Circuit 7573 is shorted to voltage

B2AF1 

Circuit 7574 is shorted to ground

B2AF2 

Circuit 7574 is shorted to voltage

B2AF3 

Circuit 7573 or circuit 7574 is open

B2AF4 

The BCM detects current on circuit 7574 when the driver is commanded off

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