AutoCodes – Mitsubishi – B1BB3 Mitsubishi

B1BB3 Mitsubishi Code - Passenger Air Bag Disable Switch Circuit Low

Quick Answer

When the ignition is on, the Passenger Airbag MUX Switch Sense circuit supplies a 3 to 10 ms pulse every 100 ms across the On or Off switch resistor to the Passenger Airbag MUX switch return circuit. Common causes include Faulty Passenger Air Bag Disable Switch, Passenger Air Bag Disable Switch harness is open or shorted, Passenger Air Bag Disable Switch 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: B1BB3 Mitsubishi indicates Passenger Air Bag Disable Switch Circuit Low.
Common causes: Common causes include Faulty Passenger Air Bag Disable Switch, Passenger Air Bag Disable Switch harness is open or shorted, Passenger Air Bag Disable Switch 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 662

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 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1BB3 Mitsubishi Description

When the ignition is on, the Passenger Airbag MUX Switch Sense circuit supplies a 3 to 10 ms pulse every 100 ms across the On or Off switch resistor to the Passenger Airbag MUX switch return circuit. The code will set if the Occupant Restraint Controller (ORC) senses low resistance on the Passenger Airbag MUX Switch Sense circuit.

OBDII Code B1BB3 Mitsubishi - Passenger Air Bag Disable Switch Circuit Low - AutoCodes.com — B1BB3 Mitsubishi Code - Passenger Air Bag Disable Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1BB3 Mitsubishi?

Faulty Passenger Air Bag Disable Switch
Passenger Air Bag Disable Switch harness is open or shorted
Passenger Air Bag Disable Switch circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1BB3 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 B1BB3 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 B1BB3 Mitsubishi code?

Need more information on how to fix the B1BB3 Mitsubishi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1BB3 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 B1BB3 Mitsubishi Code

1. What are the common symptoms of OBDII code B1BB3 in a Mitsubishi related to the Passenger Air Bag Disable Switch Circuit Low?

The common symptoms include the airbag warning light illuminating on the dashboard and a possible message indicating an issue with the passenger airbag system.

2. What are the possible causes of the B1BB3 OBDII code in a Mitsubishi?

The code B1BB3 typically indicates a low voltage condition in the passenger airbag disable switch circuit. This can be caused by a faulty passenger airbag disable switch, damaged wiring, or a malfunctioning airbag control module.

3. How serious is the B1BB3 OBDII code in a Mitsubishi?

This code should be taken seriously as it relates to the proper functioning of the passenger airbag system, which is a critical safety feature in the vehicle. It is recommended to address this issue promptly to ensure the airbag system functions correctly in case of an accident.

4. Can I continue to drive my Mitsubishi with the B1BB3 OBDII code present?

It is not recommended to drive the vehicle with the B1BB3 code present, as it indicates a potential issue with the passenger airbag system. Driving with a malfunctioning airbag system can compromise passenger safety in the event of a collision.

5. How can I diagnose and repair the B1BB3 OBDII code in my Mitsubishi?

Diagnosing and repairing the B1BB3 code typically involves inspecting the passenger airbag disable switch, checking the wiring for damage or loose connections, and testing the airbag control module for proper operation. It is recommended to consult a qualified mechanic or dealership for an accurate diagnosis and repair.

6. Is the repair for the B1BB3 OBDII code in a Mitsubishi expensive?

The cost of repairing the B1BB3 code can vary depending on the underlying cause of the issue. Simple fixes such as replacing a faulty switch or repairing a damaged wire may be relatively inexpensive, while a malfunctioning airbag control module can be more costly to replace.

7. Can I reset the B1BB3 OBDII code in my Mitsubishi without fixing the underlying issue?

Resetting the code without addressing the underlying issue will likely result in the code reappearing once the system detects the fault again. It is important to diagnose and repair the problem causing the B1BB3 code for a permanent solution.

8. Are there any safety precautions I should take when working on the passenger airbag system related to the B1BB3 OBDII code in my Mitsubishi?

When working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for a specified time to allow the system to discharge. Additionally, following proper safety procedures outlined in the vehicle's service manual is essential to prevent accidental airbag deployment.

9. Will the B1BB3 OBDII code prevent my Mitsubishi from passing a state inspection?

The B1BB3 code related to the passenger airbag system can be a safety concern, and it may cause the vehicle to fail a state inspection depending on the regulations in your area. It is advisable to address the issue promptly to ensure compliance with safety standards.

10. Can a DIY enthusiast with basic automotive knowledge repair the B1BB3 OBDII code in a Mitsubishi?

While some simple repairs like checking for loose connections or replacing a faulty switch may be within reach of a DIY enthusiast, diagnosing and repairing complex issues with the airbag system, such as a malfunctioning control module, is best left to experienced professionals due to safety concerns.