B0623moderate severityBody
Blend Door Actuator Circuit - Passenger Side
on 2002 Chevrolet Astro 4.3L V6 Vortec · RWD
What this code means
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.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open
B0012
Driver Side Airbag Deployment Circuit Short to Ground
B0013
Driver Side Airbag Deployment Circuit Short to Battery