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Home >> Buick >> 2018 >> Encore Preferred, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC P1B12 >> Circuit/System Verification
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Verification

  1. Verify that no other DTCs are set except for DTC P1B12 is set.
    • Go to next step: If no other DTCs are set 
  2. Replace the K17 Electronic Brake Control Module.
  3. Verify the DTC P1B12 does not set while operating the vehicle within the Conditions for Running the DTC.
    • If only DTC P1B12 is set 

      Replace the K20 Engine Control Module.

    • Go to next step: If the DTC does not set 
  4. All OK.
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