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Home >> Buick >> 2017 >> Envision Preferred, FWD >> 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 >> Conditions for Running the DTC

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Conditions for Running the DTC

Ignition ON.
The HVAC control module is ON.

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