AutoCodes – Mitsubishi – B1B03 Mitsubishi

B1B03 Mitsubishi Code - Driver Airbag Squib 1 Circuit Shorted Together

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 1, Driver Airbag Squib 1 harness is open or shorted, Driver Airbag Squib 1 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: B1B03 Mitsubishi indicates Driver Airbag Squib 1 Circuit Shorted Together.
Common causes: Common causes include Faulty Driver Airbag Squib 1, Driver Airbag Squib 1 harness is open or shorted, Driver Airbag Squib 1 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 3,258

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 B1B03 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 Adapter 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 B1B03 Mitsubishi - Driver Airbag Squib 1 Circuit Shorted Together - AutoCodes.com — B1B03 Mitsubishi Code - Driver Airbag Squib 1 Circuit Shorted Together

What does this mean?

What are the Possible Causes of the DTC B1B03 Mitsubishi?

Faulty Driver Airbag Squib 1
Driver Airbag Squib 1 harness is open or shorted
Driver Airbag Squib 1 circuit poor electrical connection
Faulty Driver Airbag
Faulty Steering Comun Control Module (Clockspring)
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B03 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 B1B03 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 B1B03 Mitsubishi code?

Need more information on how to fix the B1B03 Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B03 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 B1B03 Mitsubishi Code

1. What are the common symptoms of OBDII code B1B03 in a Mitsubishi related to the Driver Airbag Squib 1 Circuit Shorted Together?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential loss of functionality of the driver's airbag.

2. What are the possible causes of the B1B03 OBDII code in a Mitsubishi?

- The code B1B03 typically indicates a short circuit in the wiring of the driver airbag squib 1, which could be caused by damaged wiring, faulty connectors, or a defective airbag squib.

3. How serious is the B1B03 OBDII code in a Mitsubishi?

- This code is considered serious as it pertains to the driver's airbag system, which is a critical safety component. It is important to address this issue promptly to ensure the proper functioning of the airbag in case of an accident.

4. Can I continue driving my Mitsubishi with the B1B03 OBDII code present?

- It is not recommended to drive the vehicle with the B1B03 code active, as it indicates a problem with the driver's airbag system. The airbag may not deploy in the event of a collision, increasing the risk of injury.

5. How can I diagnose and repair the B1B03 OBDII code in my Mitsubishi?

- Diagnosis typically involves inspecting the wiring and connectors related to the driver airbag squib 1 for any signs of damage or short circuits. Repairs may involve replacing damaged wiring, connectors, or the airbag squib itself.

6. Is it safe to reset the B1B03 OBDII code in my Mitsubishi using a diagnostic scanner?

- While resetting the code may temporarily turn off the warning light, it will not fix the underlying issue causing the B1B03 code. It is important to diagnose and repair the problem to ensure the proper operation of the driver's airbag system.

7. Are there any safety precautions I should take when working on the driver airbag system in my Mitsubishi?

- It is crucial to disconnect the vehicle's battery and wait for the specified amount of time to discharge any stored electrical energy before working on the airbag system to prevent accidental deployment.

8. Can a DIY enthusiast with basic automotive knowledge repair the B1B03 OBDII code in a Mitsubishi?

- While some DIY enthusiasts may have the skills to diagnose and repair wiring issues, working on the airbag system requires specialized knowledge and precautions due to safety concerns. It is recommended to seek professional help for airbag system repairs.

9. How much does it typically cost to repair the B1B03 OBDII code related to the Driver Airbag Squib 1 Circuit Shorted Together in a Mitsubishi?

- The cost of repair can vary depending on the underlying issue causing the code and whether any components need to be replaced. It is advisable to consult a mechanic or dealership for an accurate estimate.

10. Will the B1B03 OBDII code cause my Mitsubishi to fail a vehicle inspection or emissions test?

- The B1B03 code may not directly affect the vehicle's emissions, but it is a safety-related issue that could lead to a failed inspection, depending on the regulations in your area. It is best to address the problem promptly.