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Home >> Buick >> 2017 >> Envision Preferred, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Automatic >> Diagnostic Information and Procedures >> DTC B0223, B022A, B0233, B023A, B0408, B0418, B0428, or B3531: Recirculate Position Command/Air Flow Control/Air Flow Control/Temperature Control/Rear Air Flow Control >> Circuit/System Verification
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Circuit/System Verification

  1. Perform the Actuator Recalibration  procedure.
  2. Verify the concern or DTC has been corrected.
    • If the concern or DTC has not been corrected 
    1. Verify DTC B023A is not set.
      • If DTC B023A is set, refer to Circuit/System Testing - DTC B023A.
      • If DTC B023A is not set, refer to Circuit/System Testing - DTC B0223, B0233, B0408, B0418, B0428 or B3531.
    • If the concern or DTC has been corrected 
  3. All OK.
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