What it means
This code identifies a fault associated with Sensor Cleaning Air Blower Actuator B Control. The code alone does not specify the failure mode.
How it works
Sensor Cleaning Air Blower Actuator B Control refers to the control path that operates blower actuator B. B0103 indicates the module has detected a fault associated with that control function, without specifying the exact failure mode.
Common causes
Most likely first.
- Faulty actuator
- Open or shorted control wiring
- Loose or corroded connector
- Blown fuse
Symptoms
- Sensor or camera visibility warning
- Reduced sensor function
- Warning light or message
How to diagnose it
- Scan the relevant module for B0103 and related codes, and review freeze-frame or live status data for the command sent to blower actuator B.
- Locate actuator B and its control wiring from the vehicle wiring information; inspect its connector and harness for corrosion, loose pins, chafing, or damage.
- Test the actuator B control circuit for opens or shorts using the manufacturer's procedure and wiring diagram.
- Check the relevant fuse and verify actuator B's power and ground against the manufacturer's specification.
- If the scan tool supports it, command actuator B and compare the requested state with its operation and the module's reported response.
Common fixes
- Reconnect or clean the actuator B control connector.
- Repair damaged or open actuator B control wiring, or correct a short in the circuit.
- Replace a failed fuse after checking for the cause.
- Replace actuator B if it does not respond despite correct circuit power, ground, and control.
- Repair the controlling module only if its output is confirmed faulty after circuit and actuator checks.
Can I keep driving?
Driving is generally possible, but blower actuator B may not clear its associated sensor or camera, reducing visibility and driver-assistance availability. Keep the sensor area clean and do not rely on affected features when it is obscured.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.