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Engine-Codes – Generic – B1BB5

B1BB5 Code - Passenger Air Bag Disable Switch Circuit Open

Quick Answer

The B1BB5 diagnostic trouble code (DTC) indicates that there is an open circuit detected in the passenger airbag disable switch circuit. Common causes include Faulty passenger airbag disable switch, Damaged wiring or connectors in the circuit, Corrosion or moisture ingress in the circuit. 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
B1BB5 indicates Passenger Air Bag Disable Switch Circuit Open.
Common causes
Common causes include Faulty passenger airbag disable switch, Damaged wiring or connectors in the circuit, Corrosion or moisture ingress in the circuit.
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 08, 2024
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Code B1BB5 Description

The B1BB5 diagnostic trouble code (DTC) indicates that there is an open circuit detected in the passenger airbag disable switch circuit. The passenger airbag disable switch is a safety feature in vehicles that allows the passenger airbag to be deactivated when necessary, such as when a child is seated in the front passenger seat. An open circuit in this system means that there is a break or discontinuity in the electrical connection, preventing the proper functioning of the switch.

OBDII Code B1BB5 - Passenger Air Bag Disable Switch Circuit Open
B1BB5 Code - Passenger Air Bag Disable Switch Circuit Open

Common Causes of B1BB5

  1. Faulty passenger airbag disable switch
  2. Damaged wiring or connectors in the circuit
  3. Corrosion or moisture ingress in the circuit
  4. Blown fuse related to the airbag system
  5. Faulty airbag control module

Symptoms of B1BB5

  1. Airbag warning light illuminated on the dashboard
  2. Inability to disable the passenger airbag using the switch
  3. Intermittent or erratic behavior of the passenger airbag system
  4. Audible warning chime indicating a fault with the airbag system
  5. Vehicle failing airbag system self-test during startup

How to Fix B1BB5

  1. Begin by conducting a visual inspection of the passenger airbag disable switch and associated wiring for any obvious signs of damage or corrosion.
  2. Use a multimeter to test the continuity of the circuit, checking for any open circuits or high resistance readings.
  3. If the switch is found to be faulty, replace it with a new one following the manufacturer's instructions.
  4. Check and replace any damaged wiring or connectors in the circuit as needed.
  5. Clear the DTC using an OBD-II scanner and perform a test drive to ensure the issue has been resolved.

Cost to Fix B1BB5

The cost of repairing a B1BB5 code can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. Generally, the cost of parts for this repair can range from $50 to $200, with labor costs adding another $100 to $300. Overall, the total repair cost may be in the range of $150 to $500. It is recommended to contact local auto repair shops for more accurate estimates based on the specific vehicle and location.

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Code B1BB5 Information for Specific Makes

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 B1BB5 Code

1. What are the common symptoms of OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

The common symptoms include the airbag warning light staying illuminated on the dashboard and the passenger airbag being disabled.

2. What causes the OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

This code is typically triggered by a fault in the circuit that controls the passenger air bag disable switch, such as a loose connection or a damaged wiring harness.

3. How serious is OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

This code indicates a problem with the passenger air bag system, which could compromise passenger safety in the event of a crash. It is important to address this issue promptly.

4. Can I still drive my vehicle with OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

It is not recommended to drive the vehicle with this code active, as the passenger airbag may not deploy in the event of an accident. It is best to address the issue as soon as possible.

5. How can I diagnose the OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

Diagnosing this code typically involves checking the wiring and connections related to the passenger air bag disable switch, as well as using a diagnostic scanner to verify the fault.

6. What is the typical repair for OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

The repair for this code usually involves identifying and fixing the issue in the circuit, which may include repairing or replacing damaged wiring, connectors, or the passenger air bag disable switch itself.

7. Can I reset the OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open) without fixing the underlying issue?

While you can clear the code with a diagnostic scanner, it is important to address the root cause of the problem to ensure the passenger air bag system functions correctly.

8. How much does it cost to repair OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

The cost of repair can vary depending on the specific issue causing the code and the labor rates of the repair shop. It is recommended to get a diagnostic and repair estimate from a qualified technician.

9. Are there any recalls related to OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

Recalls related to this specific OBDII code may vary by vehicle make and model. It is advisable to check with the manufacturer or a dealership to see if there are any relevant recalls.

10. Can a DIY enthusiast fix OBDII code B1BB5 (Passenger Air Bag Disable Switch Circuit Open)?

While some DIY enthusiasts may have the skills to diagnose and repair this code, it is crucial to have a good understanding of automotive electrical systems and airbag safety. If in doubt, it is best to consult a professional technician.

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