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Engine-Codes – Generic – B2984

B2984 Code - Deployable Steering Column Circuit Open

Quick Answer

The B2984 diagnostic trouble code (DTC) indicates that there is an open circuit in the deployable steering column system of the vehicle. Common causes include Damaged wiring harness or connectors, Faulty steering column control module, Malfunctioning deployable steering column mechanism. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B2984 indicates Deployable Steering Column Circuit Open.
Common causes
Common causes include Damaged wiring harness or connectors, Faulty steering column control module, Malfunctioning deployable steering column mechanism.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B2984 Description

The B2984 diagnostic trouble code (DTC) indicates that there is an open circuit in the deployable steering column system of the vehicle. The deployable steering column is a safety feature that is designed to collapse in the event of a frontal impact, reducing the risk of injury to the driver. When this circuit is open, it means that there is a break in the electrical connection that controls the deployment of the steering column. This can prevent the steering column from collapsing properly in a crash, compromising the safety of the driver.

OBDII Code B2984 - Deployable Steering Column Circuit Open
B2984 Code - Deployable Steering Column Circuit Open

Common Causes of B2984

  1. Damaged wiring harness or connectors
  2. Faulty steering column control module
  3. Malfunctioning deployable steering column mechanism
  4. Corrosion in the electrical connections
  5. Impact or collision that damaged the steering column system

Symptoms of B2984

  1. Illumination of the airbag warning light on the dashboard
  2. Inability to adjust the steering column position
  3. Steering column feels loose or unstable
  4. Vehicle fails to deploy the steering column during a crash

How to Fix B2984

  1. Begin by conducting a thorough inspection of the wiring harness and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the wiring to identify any open circuits.
  3. Check the steering column control module for any signs of malfunction and replace if necessary.
  4. Inspect the deployable steering column mechanism for proper operation and repair or replace any damaged components.
  5. Clear the DTC from the vehicle's memory using a diagnostic scanner after completing the repairs.

Cost to Fix B2984

The cost of repairing a deployable steering column circuit open issue can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary widely, so it's advisable to obtain quotes from multiple shops to get a more accurate estimate. Additionally, the cost of any necessary replacement parts will also affect the total repair bill.

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Code B2984 Information for Specific Makes

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2984 Code

1. What does OBDII code B2984 mean?

Code B2984 indicates an open circuit in the deployable steering column system, which is designed to enhance safety during a collision.

2. What are the common symptoms of code B2984?

Common symptoms include an illuminated airbag or SRS warning light, loss of deployable steering column functionality, and possible error messages displayed on the dashboard.

3. What causes code B2984 to occur?

This code is typically caused by damaged wiring or connectors, a faulty deployable steering column module, or issues with the vehicle’s airbag control module.

4. Is it safe to drive with a B2984 code?

Driving with this code may compromise the safety features of the vehicle, especially during a collision, so it is recommended to address the issue promptly.

5. How do I diagnose the B2984 code?

Start by inspecting the wiring and connectors related to the deployable steering column for damage or corrosion. Use a scan tool to check for additional codes and test the module for proper functionality.

6. How can I fix the B2984 code?

Repairs may include replacing damaged wiring, securing loose connectors, or replacing the deployable steering column module if it is defective.

7. Can a weak battery cause the B2984 code?

While uncommon, a weak or failing battery can cause electrical system issues, potentially triggering this code. It’s worth testing the battery and charging system as part of the diagnosis.

8. Does the B2984 code require module reprogramming?

If the deployable steering column module or airbag control module is replaced, reprogramming with specialized equipment may be necessary to ensure proper functionality.

9. How much does it cost to fix code B2984?

Repair costs depend on the root cause, ranging from $100 for minor wiring repairs to $1,000 or more if the entire module needs replacement.

10. Can I clear the B2984 code without fixing it?

Clearing the code without addressing the underlying issue is not recommended, as it may reappear and compromise the vehicle’s safety systems.

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