AutoCodes – Generic – B1B04

B1B04 Code - Driver Airbag Squib 2 Circuit Low

Quick Answer

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. Common causes include Faulty Driver Airbag Squib 2, Driver Airbag Squib 2 harness is open or shorted, Driver Airbag Squib 2 circuit poor electrical connection. 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 indicates Driver Airbag Squib 2 Circuit Low.
Common causes: Common causes include Faulty Driver Airbag Squib 2, Driver Airbag Squib 2 harness is open or shorted, Driver Airbag Squib 2 circuit poor electrical connection.
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.

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Code Popularity 2,177

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B04 Description

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a "floating" configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. The use of the SRS Load Tool Adaptor provides a test point as well as a method for opening the shorting bar connections within the harness connector. The Clockspring is part of the Steering Column Control Module (SCCM). The SCCM includes the steering column shroud, the Steering Angle Sensor (SAS), the Clockspring, the Multi-function Switch, a Steering Column Power Tilt and Telescope Switch (if equipped), and a trim cover. The SCCM is replaced as an entire assembly. The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the ignition is on.

OBDII Code B1B04 - Driver Airbag Squib 2 Circuit Low - AutoCodes.com — B1B04 Code - Driver Airbag Squib 2 Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1B04?

Faulty Driver Airbag Squib 2
Driver Airbag Squib 2 harness is open or shorted
Driver Airbag Squib 2 circuit poor electrical connection
Faulty Driver Airbag
Faulty Steering Comun Control Module (Clockspring)
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B04?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1B04 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1B04 code?

Need more information on how to fix the B1B04 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B04 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B04 Chrysler — Driver Airbag Squib 2 Circuit Low
B1B04 Dodge — Driver Airbag Squib 2 Circuit Low
B1B04 Jeep — Driver Airbag Squib 2 Circuit Low
B1B04 Mitsubishi — Driver Airbag Squib 2 Circuit Low
B1B04 RAM — Driver Airbag Squib 2 Circuit Low

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 Code

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

- Common symptoms include the airbag warning light illuminating on the dashboard and the airbag system potentially being disabled.

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

- The code B1B04 can be triggered by issues such as a faulty driver airbag squib, a short circuit in the driver airbag squib circuit, or damaged wiring.

3. How serious is OBDII code B1B04?

- OBDII code B1B04 relating to the Driver Airbag Squib 2 Circuit Low is a serious issue as it indicates a potential problem with the driver's airbag system, which may not deploy properly in the event of an accident.

4. How can I diagnose OBDII code B1B04?

- Diagnosis typically involves using a compatible OBDII scanner to retrieve the trouble codes from the vehicle's computer, followed by inspecting the driver airbag squib and associated wiring for any visible damage.

5. Can I continue driving with OBDII code B1B04 present?

- It is not recommended to drive with OBDII code B1B04 present, as it indicates a fault in the driver airbag system, which is a critical safety component in the event of a collision.

6. How can OBDII code B1B04 be repaired?

- Repairing OBDII code B1B04 may involve replacing the faulty driver airbag squib, repairing any damaged wiring, or addressing any other underlying issues causing the circuit low condition.

7. Is it possible to clear OBDII code B1B04 without fixing the underlying issue?

- Clearing the code without addressing the underlying issue is not recommended, as the problem may persist, potentially compromising the functionality of the driver airbag system.

8. Are there any safety precautions to take when working on OBDII code B1B04?

- When working on the driver airbag system related to OBDII code B1B04, it is crucial to disconnect the vehicle's battery and wait for the specified time before starting any repair or diagnostic procedures to avoid accidental airbag deployment.

9. How much does it typically cost to repair OBDII code B1B04?

- The cost of repairing OBDII code B1B04 can vary depending on the specific cause of the issue, but it may involve parts and labor expenses ranging from a couple of hundred dollars to over a thousand dollars.

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

- While some DIY enthusiasts may have the skills to diagnose and repair OBDII code B1B04, working on the airbag system requires caution and expertise, so it is generally recommended to seek professional help to ensure the safety and proper functioning of the system.