AutoCodes – Mitsubishi – B1B04 Mitsubishi

B1B04 Mitsubishi 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 Mitsubishi 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 2,699

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

What does this mean?

What are the Possible Causes of the DTC B1B04 Mitsubishi?

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 Mitsubishi?

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 Mitsubishi 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 Mitsubishi code?

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

Need Help with the Code?

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

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 Mitsubishi Code

1. What are common symptoms of the OBDII code B1B04 in a Mitsubishi related to the Driver Airbag Squib 2 Circuit Low?

The common symptoms include the airbag warning light staying on or flashing on the dashboard and the driver airbag being non-functional.

2. What are the possible causes of the OBDII code B1B04 indicating Driver Airbag Squib 2 Circuit Low in a Mitsubishi?

Possible causes include a faulty driver airbag squib, damaged wiring or connectors in the airbag circuit, or a malfunctioning airbag control module.

3. How can I diagnose the OBDII code B1B04 in my Mitsubishi for the Driver Airbag Squib 2 Circuit Low issue?

Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the airbag system components for physical damage, and performing continuity tests on the wiring and connections.

4. Can I drive my Mitsubishi with the OBDII code B1B04 related to the Driver Airbag Squib 2 Circuit Low issue?

It is not recommended to drive the vehicle with this code present, as the driver airbag may not deploy in the event of a collision, compromising the safety of the driver.

5. What is the typical repair process for fixing the OBDII code B1B04 in a Mitsubishi due to the Driver Airbag Squib 2 Circuit Low problem?

The repair process usually involves replacing the faulty driver airbag squib, repairing or replacing damaged wiring or connectors, and clearing the error code with an OBDII scanner.

6. Are there any safety precautions to consider when working on the OBDII code B1B04 related to the Driver Airbag Squib 2 Circuit Low in a Mitsubishi?

It is crucial to disconnect the vehicle's battery before working on the airbag system to prevent accidental deployment, and following proper safety procedures outlined in the vehicle's service manual.

7. Can resetting the OBDII code B1B04 in my Mitsubishi related to the Driver Airbag Squib 2 Circuit Low issue fix the problem?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the Driver Airbag Squib 2 Circuit Low problem. Proper diagnosis and repair are necessary.

8. How much does it typically cost to repair the OBDII code B1B04 in a Mitsubishi indicating Driver Airbag Squib 2 Circuit Low?

The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Is it possible to prevent the OBDII code B1B04 related to the Driver Airbag Squib 2 Circuit Low issue from occurring in my Mitsubishi?

Regular maintenance and inspections of the airbag system, avoiding water damage to the interior, and addressing any warning signs promptly can help prevent this issue from occurring.

10. Can I fix the OBDII code B1B04 indicating Driver Airbag Squib 2 Circuit Low in my Mitsubishi myself, or do I need a professional technician?

While some enthusiasts may have the skills to diagnose and repair this issue themselves, working on the airbag system requires specialized knowledge and tools, so it is best to consult a professional technician for safety reasons.