AutoCodesGeneric – B1B05

B1B05 Code - Driver Airbag Squib 2 Circuit High

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
B1B05 indicates Driver Airbag Squib 2 Circuit High.
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 1,509
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 14, 2019
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Code B1B05 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 B1B05 - Driver Airbag Squib 2 Circuit High - AutoCodes.com
B1B05 Code - Driver Airbag Squib 2 Circuit High

What are the Possible Causes of the DTC B1B05?

  • 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 B1B05?

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 B1B05 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 B1B05 code?

Need more information on how to fix the B1B05 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B05 code diagnosed by a professional: Find a repair shop in your area

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 B1B05 Code

1. What does the OBDII code B1B05 mean?

The B1B05 code indicates a problem with the Driver Airbag Squib 2 circuit, specifically that the circuit is experiencing a high resistance or voltage issue.

2. What are the common symptoms of the B1B05 code?

Symptoms include the airbag warning light illuminating on the dashboard and the airbag system potentially being disabled.

3. What causes the B1B05 code to appear?

Common causes include damaged wiring or connectors, a faulty clock spring, a defective airbag module, or corrosion in the circuit.

4. Can I still drive my car with the B1B05 code?

Yes, you can drive the car, but the airbag system may not deploy in an accident, posing a safety risk.

5. How do I diagnose the B1B05 code?

Start by inspecting the wiring and connectors related to the driver airbag, check the clock spring for damage, and test the resistance of the squib circuit using a diagnostic tool.

6. How do I fix the B1B05 error code?

Repairs may involve replacing damaged wiring, repairing or replacing connectors, replacing a faulty clock spring, or replacing the airbag module.

7. Can I reset the airbag light after fixing the B1B05 code?

Yes, you can reset the airbag light using an OBDII scanner after resolving the issue, but ensure the repair was successful first.

8. How much does it cost to repair the B1B05 code?

Repair costs can vary, ranging from $50 for minor wiring repairs to $500 or more for replacing parts like the clock spring or airbag module.

9. Is the B1B05 code specific to certain car brands?

The B1B05 code is a generic OBDII code, but its exact diagnostic and repair steps can vary depending on the make and model of the vehicle.

10. Can a faulty clock spring cause the B1B05 code?

Yes, a damaged or worn clock spring is a common cause of the B1B05 code, as it interrupts the connection to the driver airbag.

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