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Home >> Buick >> 2017 >> Encore Preferred, AWD >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B3984: Device 1 Environment Identifier Not Programmable >> Circuit/System Verification
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Circuit/System Verification

  1. Perform the Programming and Setup procedure for the control module that set DTC B3984.
  2. Verify DTC B3984 does not set after programming.
    • If the DTC sets after programming 

      Replace the control module that set the DTC.

    • If the DTC does not set after programming 
  3. All OK.
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