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Engine-Codes – RAM – B1B04 RAM

B1B04 RAM Code - Driver Airbag Squib 2 Circuit Low

Quick Answer

The B1B04 RAM code indicates an issue with the Driver Airbag Squib 2 Circuit being detected as low. Common causes include Loose or damaged electrical connections in the airbag squib circuit, Faulty airbag squib module, Corrosion or damage to the wiring harness. 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
B1B04 RAM indicates Driver Airbag Squib 2 Circuit Low.
Common causes
Common causes include Loose or damaged electrical connections in the airbag squib circuit, Faulty airbag squib module, Corrosion or damage to the wiring harness.
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 11, 2024
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Code B1B04 RAM Description

The B1B04 RAM code indicates an issue with the Driver Airbag Squib 2 Circuit being detected as low. The airbag squib is a component of the airbag system that is responsible for deploying the airbag in the event of a collision. When this circuit is detected as low, it means that there is a problem with the electrical connection or resistance in the circuit, which could prevent the airbag from deploying properly in an accident.

OBDII Code B1B04 RAM - Driver Airbag Squib 2 Circuit Low
B1B04 RAM Code - Driver Airbag Squib 2 Circuit Low

Common Causes of B1B04 RAM

  1. Loose or damaged electrical connections in the airbag squib circuit
  2. Faulty airbag squib module
  3. Corrosion or damage to the wiring harness
  4. Issues with the clock spring in the steering column
  5. Faulty airbag control module

Symptoms of B1B04 RAM

  1. Illumination of the airbag warning light on the dashboard
  2. Inability to activate the driver airbag
  3. Faulty horn or cruise control functions
  4. Erratic behavior of other steering wheel controls
  5. Possible loss of power to the airbag system

How to Fix B1B04 RAM

  1. Diagnose the specific cause of the code by using a professional OBD-II scanner to pinpoint the issue.
  2. Inspect the electrical connections in the airbag squib circuit for any signs of damage or corrosion. Repair or replace as necessary.
  3. Check the airbag squib module for faults and replace if needed.
  4. Inspect the wiring harness for damage and repair or replace as needed.
  5. Test the airbag system after repairs are made to ensure proper functionality.

Cost to Fix B1B04 RAM

The cost of repairing a B1B04 RAM code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. Keep in mind that rates at auto repair shops can vary, so it's recommended to get quotes from multiple shops to find the best price. Additionally, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type.

When is the Code Detected?

This Diagnostic Trouble Codes (DTC) sets when the ORC detects a short to ground on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the ORC sees a recovery from a short to ground condition for greater than 2.5 seconds.

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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 B1B04 RAM Code

1. What are common symptoms of OBDII code B1B04 RAM (Driver Airbag Squib 2 Circuit Low)?

- Common symptoms include the airbag warning light illuminating on the dashboard, non-deployment of the driver airbag in the event of a collision, and potential communication issues with the vehicle's diagnostic system.

2. What are the possible causes of OBDII code B1B04 RAM?

- The code B1B04 RAM can be triggered by issues such as a faulty driver airbag squib 2, damaged wiring or connectors in the airbag circuit, or a malfunction in the airbag control module.

3. How can I diagnose the cause of OBDII code B1B04 RAM?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault codes, inspecting the driver airbag squib 2 and related wiring for damage, and testing the airbag system components for proper functionality.

4. Can I drive my vehicle with OBDII code B1B04 RAM active?

- It is not recommended to drive the vehicle with an active B1B04 RAM code, as it indicates a potential issue with the driver airbag system, which may compromise safety in the event of a collision.

5. How can I repair OBDII code B1B04 RAM?

- Repairing the B1B04 RAM code typically involves replacing the faulty driver airbag squib 2, repairing or replacing damaged wiring or connectors, and clearing the fault codes from the vehicle's system.

6. Are there any safety precautions to take when working on the driver airbag system related to code B1B04 RAM?

- It is crucial to disconnect the vehicle's battery and wait for a specified period before working on the airbag system to prevent accidental deployment, as well as following proper safety procedures outlined in the vehicle's service manual.

7. Can a DIY enthusiast fix OBDII code B1B04 RAM at home?

- While some basic troubleshooting steps can be performed at home, repairing OBDII code B1B04 RAM may require specialized tools and expertise, so it is recommended to seek professional help for proper diagnosis and repair.

8. How much does it cost to repair OBDII code B1B04 RAM at a mechanic or dealership?

- The cost of repairing OBDII code B1B04 RAM can vary depending on the specific cause of the issue, but it may involve parts replacement, labor costs, and diagnostic fees, which can range from a few hundred to a thousand dollars.

9. Will resetting the OBDII code B1B04 RAM clear the issue permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the B1B04 RAM code is not addressed, the problem is likely to reappear, so it is crucial to diagnose and repair the root cause.

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