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Home › Buick › 2013 › Encore Base, AWD › Repair and Diagnosis › Body & Frame › Ignition Switch/Steering Lock › Immobilizer System › Diagnostic Information and Procedures › DTC B3976 › Circuit/System Verification

Circuit/System Verification

  1. Verify the engine starts with each available key.
    • If the engine does not start with a key 

      Replace the key.

    • If the engine starts with all keys 
  2. All OK.
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