Circuit/System Testing

WARNING: This page is about a different car, the 2021 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Verify that no other DTCs are set except for DTC C1211.
- If any other DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If only DTC C1211 is set
Replace the K17 Electronic Brake Control Module / K160 Brake System Control Module.
Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
- If DTC sets
  Replace the K20 Engine Control Module.
- Go to next step: If DTC does not set
All OK.