Quickly fix code B0029 based on the symptoms.

What is the B0029 fault code?

The B0029 fault code, applicable to all car manufacturers, means “Right Curtain Deployment Control 1 (Subfault)“.

Background Information: Side airbags are mainly divided into two types: side trunk airbags and side curtain airbags. Side trunk airbags deploy from the seat or door panel to protect the occupant’s torso. Head protection comes from extensions of the side trunk airbags or from overhead curtain airbags.

B0029 Fault Code Symptoms:

• Airbag warning light illuminates
• Airbag deployment failure

Possible Causes of B0029 Code:

• Curtain airbag sensor malfunction: This fault may be triggered if the sensor for the right-side curtain airbag fails.
• Wiring problem: Damaged or corroded wiring or connectors in the circuitry connecting the right-side curtain airbag may cause this fault.
• Airbag control module malfunction: The module responsible for controlling the airbag system may malfunction.
• Faulty Deployment Module: The deployment module that initiates airbag inflation may malfunction.
• Clock Spring Fault: The clock spring is part of the steering column assembly and is involved in the airbag system. A fault here may also trigger the code.
• Airbag System Fault: Other problems in the airbag system, such as a faulty inflator or a defective airbag, can also cause this fault.

Common Diagnostics and Repairs for B0029 Code:

1. Scan Codes: Use an OBD2 scanner to confirm the presence of the B0029 fault code and check for other related fault codes. Pay attention to any additional airbag-related codes, as multiple problems may exist within the system.
2. Inspect Wiring and Connectors: Inspect the wiring and connectors associated with the right-side curtain airbag for signs of damage, wear, or corrosion. These components are typically located on the side of the vehicle, near the roofline. Ensure all connectors are securely installed and wiring is intact.
3. Inspect the Appropriate Curtain Airbag: Inspect the appropriate curtain airbag for signs of obvious damage or accidental deployment. If the airbag has deployed, it needs to be replaced. Also, check that the airbag itself is functioning correctly.
4. Check the Airbag Control Module: The Airbag Control Module (ACM) plays a crucial role in managing airbag deployment. A malfunctioning ACM may trigger the B0029 code. Perform a system check on the ACM to ensure it is functioning correctly.
5. Check the Impact Sensors: The impact sensors that trigger airbag deployment may be faulty. Check these sensors, especially those located on the right side of the vehicle, in case of any problems or malfunctions.
6. Clear Codes and Test: After addressing the potential issues, use a scanning tool to clear the Diagnostic Trouble Codes (DTCs). Then, test drive the vehicle to determine if the B0029 code reappears.
7. Professional Diagnostics: If the problem persists after completing the above steps, it may be necessary to consult a professional mechanic or visit a dealership equipped with professional diagnostic equipment for further inspection and repair.

Relevant OBD-II Error Codes:

B0028 – Right Side Airbag Deployment Control (Subfault)

B0040 – Third Row Left Side Airbag Deployment Control (Subfault)

B0041 – Third Row Left Frontal Stage 1 Deployment Control (Subfault)