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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 >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Stepper Motors 12 V Reference B023A 02, B0223 06, B0233 06, B0408 06, B0418 06, B0428 06, B3531 06 * B023A 02, B0223 06, B0233 06, B0408 06, B0418 06, B0428 06, B3531 06 * - -
Recirculation Actuator Control 1 B0223 06 B0223 06 B0223 01 1
Recirculation Actuator Control 2 B0223 06 B0223 06 B0223 01 1
Recirculation Actuator Control 3 B0223 06 B0223 06 B0223 01 1
Recirculation Actuator Control 4 B0223 06 B0223 06 B0223 01 1
Air Temperature Actuator Control 1 B0408 06 B0408 06 B0408 01 1
Air Temperature Actuator Control 2 B0408 06 B0408 06 B0408 01 1
Air Temperature Actuator Control 3 B0408 06 B0408 06 B0408 01 1
Air Temperature Actuator Control 4 B0408 06 B0408 06 B0408 01 1
Passenger Air Temperature Actuator Control 1 B0418 06 B0418 06 B0418 01 1
Passenger Air Temperature Actuator Control 2 B0418 06 B0418 06 B0418 01 1
Passenger Air Temperature Actuator Control 3 B0418 06 B0418 06 B0418 01 1
Passenger Air Temperature Actuator Control 4 B0418 06 B0418 06 B0418 01 1
Mode Actuator Control 1 B0233 06 B0233 06 B0233 01 1
Mode Actuator Control 2 B0233 06 B0233 06 B0233 01 1
Mode Actuator Control 3 B0233 06 B0233 06 B0233 01 1
Mode Actuator Control 4 B0233 06 B0233 06 B0233 01 1
Rear Temperature Actuator Control 1 (CJ4) B0428 06 B0428 06 B0428 01 1
Rear Temperature Actuator Control 2 (CJ4) B0428 06 B0428 06 B0428 01 1
Rear Temperature Actuator Control 3 (CJ4) B0428 06 B0428 06 B0428 01 1
Rear Temperature Actuator Control 4 (CJ4) B0428 06 B0428 06 B0428 01 1
Rear Air Flow Actuator Control 1 (CJ4) B3531 06 B3531 06 B3531 01 1
Rear Air Flow Actuator Control 2 (CJ4) B3531 06 B3531 06 B3531 01 1
Rear Air Flow Actuator Control 3 (CJ4) B3531 06 B3531 06 B3531 01 1
Rear Air Flow Actuator Control 4 (CJ4) B3531 06 B3531 06 B3531 01 1
* DTCs for auxiliary actuators only set when equipped with CJ4
1. HVAC Malfunction