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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Interior Trim And Paneling) >> Diagnostic Information and Procedures >> DTC B1A57 >> Circuit/System Verification

Circuit/System Verification

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.
  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC B1A57 49 is not set.
    • If the DTC is set 

      Replace the component: A103 Roof Console

    • Go to next step: If the DTC is not set 
  3. All OK.
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