AutoCodes – Generic – B1BB5

B1BB5 Code - Passenger Air Bag Disable Switch Circuit Open

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: B1BB5 indicates Passenger Air Bag Disable Switch Circuit Open.
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 2,231

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 B1BB5 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 an open or high resistance on the Passenger Airbag MUX Switch Sense circuit or Passenger Airbag MUX Switch Return circuit.

OBDII Code B1BB5 - Passenger Air Bag Disable Switch Circuit Open - AutoCodes.com — B1BB5 Code - Passenger Air Bag Disable Switch Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1BB5?

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 B1BB5?

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 B1BB5 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 B1BB5 code?

Need more information on how to fix the B1BB5 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1BB5 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1BB5 Chrysler — Passenger Air Bag Disable Switch Circuit Open
B1BB5 Dodge — Passenger Air Bag Disable Switch Circuit Open
B1BB5 Jeep — Passenger Air Bag Disable Switch Circuit Open
B1BB5 Mitsubishi — Passenger Air Bag Disable Switch Circuit Open
B1BB5 RAM — Passenger Air Bag Disable Switch Circuit Open

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.