B3A47
Active Aerodynamic Feature B Position Sensor 2 Circuit Low Voltage
B3A47 is an OBD-II diagnostic trouble code meaning: Active Aerodynamic Feature B Position Sensor 2 Circuit Low Voltage. Common causes: position sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Incorrect operation of active aerodynamic elements
- Malfunction indicator light comes on
- Reduced aerodynamic efficiency at high speeds
Causes
- Position sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in connectors
- Sensor power problems
How to Fix
- Check the integrity of the wiring harness to the sensor
- Check the contacts in the sensor connectors
- Measure the sensor supply voltage
- Check sensor resistance
- Replace sensor if necessary
Related codes
Error B3A47 by Vehicle Brand
FAQ
What does the B3A47 code mean?
B3A47 is an OBD-II diagnostic trouble code that indicates: Active Aerodynamic Feature B Position Sensor 2 Circuit Low Voltage
What causes a B3A47 error code?
The most common causes of B3A47 include: Position sensor malfunction; Open or short circuit in wiring harness; Poor contact in connectors; Sensor power problems.
How do I fix a B3A47 diagnostic trouble code?
To fix B3A47: Check the integrity of the wiring harness to the sensor. Check the contacts in the sensor connectors. Measure the sensor supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3A47?
Limited driving only, diagnose soon
How much does it cost to fix B3A47?
The estimated repair cost for B3A47 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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