Blend Door Actuator Circuit - Passenger Side
2019-2019 Buick Enclave 3.6L V6
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed b0623 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the passenger side blend door actuator for dual-zone climate systems.
Symptoms
- Passenger side blows only hot or cold
- Temperature disparity between sides
- Clicking from dash passenger side
Common Causes
- Faulty actuator
- Blend door binding
- Stripped actuator gears
- Wiring issue
Diagnostic Steps
- Test actuator operation
- Check for mechanical binding
- Inspect actuator gears
- Test wiring
- Scan HVAC module
Repair Notes
Replace passenger blend door actuator.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B0623 on Other Vehicles
Common Questions
What does code B0623 mean on a 2019-2019 Buick Enclave?
B0623 stands for "Blend Door Actuator Circuit - Passenger Side". Malfunction in the passenger side blend door actuator for dual-zone climate systems.
What are the symptoms of B0623 on a Buick Enclave?
Common symptoms of B0623 include: Passenger side blows only hot or cold, Temperature disparity between sides, Clicking from dash passenger side.
What causes B0623 on a 2019-2019 Buick Enclave?
Common causes of B0623 include: Faulty actuator, Blend door binding, Stripped actuator gears, Wiring issue.
Last updated: March 2026