AutoCodes – Generic – B1B02

B1B02 Code - Driver Airbag Squib 1 Circuit Open

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: B1B02 indicates Driver Airbag Squib 1 Circuit Open.
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 3,773

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 B1B02 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 B1B02 - Driver Airbag Squib 1 Circuit Open - AutoCodes.com — B1B02 Code - Driver Airbag Squib 1 Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1B02?

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 B1B02?

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 B1B02 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 B1B02 code?

Need more information on how to fix the B1B02 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B02 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1B02 Chrysler — Driver Airbag Squib 1 Circuit Open
B1B02 Dodge — Driver Airbag Squib 1 Circuit Open
B1B02 Jeep — Driver Airbag Squib 1 Circuit Open
B1B02 Mitsubishi — Driver Airbag Squib 1 Circuit Open
B1B02 RAM — Driver Airbag Squib 1 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 B1B02 Code

1. What does the OBDII code B1B02 mean?

B1B02 indicates an open circuit in the driver airbag squib 1, which is part of the airbag deployment system.

2. What are the common symptoms of a B1B02 code?

Common symptoms include the airbag warning light illuminating on the dashboard and potential deactivation of the driver's airbag.

3. What causes the B1B02 code to appear?

This code can be caused by damaged or corroded wiring, a loose or disconnected connector, a faulty clock spring, or a defective airbag module.

4. Is it safe to drive with a B1B02 code?

It is not recommended, as the driver's airbag may not deploy in the event of an accident, compromising safety.

5. How can I diagnose a B1B02 code?

Diagnose the code by inspecting the clock spring, connectors, and wiring for damage, and using a scan tool to check for related airbag system faults.

6. What is a clock spring, and how does it relate to the B1B02 code?

The clock spring maintains an electrical connection to the airbag while the steering wheel turns, and a fault in it can cause the B1B02 code.

7. Can I clear the B1B02 code without fixing the issue?

Clearing the code without repairs will not resolve the problem, and the code will likely reappear with the airbag system still malfunctioning.

8. How much does it cost to repair a B1B02 code?

Repair costs vary depending on the issue but can range from $100 for wiring repairs to $500+ if the clock spring or airbag module needs replacement.

9. Can a faulty airbag module cause the B1B02 code?

Yes, a defective airbag module can cause this code if it fails to properly communicate or control the airbag system.

10. How can I prevent the B1B02 code from occurring?

Regularly inspect and maintain the airbag system, keep electrical connections clean, and avoid tampering with the steering wheel or airbag components.