AutoCodes – Chrysler – B1B21 Chrysler

B1B21 Chrysler Code - Right Side Curtain Squib 1 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 the wiring. Common causes include Faulty Right Side Curtain Squib 1, Right Side Curtain Squib 1 harness is open or shorted, Right Side Curtain 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: B1B21 Chrysler indicates Right Side Curtain Squib 1 Circuit High.
Common causes: Common causes include Faulty Right Side Curtain Squib 1, Right Side Curtain Squib 1 harness is open or shorted, Right Side Curtain 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 1,187

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 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1B21 Chrysler Description

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and the 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 Supplemental Restraint System (SRS) Load Tool Adapter provides a test point, as well as a method for opening the shorting bar connections within the harness connector. 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 B1B21 Chrysler - Right Side Curtain Squib 1 Circuit High - AutoCodes.com — B1B21 Chrysler Code - Right Side Curtain Squib 1 Circuit High

What does this mean?

What are the Possible Causes of the DTC B1B21 Chrysler?

Faulty Right Side Curtain Squib 1
Right Side Curtain Squib 1 harness is open or shorted
Right Side Curtain Squib 1 circuit poor electrical connection
Faulty Right Side Curtain Airbag
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B21 Chrysler?

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 B1B21 Chrysler 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 B1B21 Chrysler code?

Need more information on how to fix the B1B21 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B21 Chrysler 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 B1B21 Chrysler Code

1. What are the common symptoms of OBDII code B1B21 Chrysler (Right Side Curtain Squib 1 Circuit High)?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the right side curtain airbag during a collision.

2. What could cause the OBDII code B1B21 Chrysler to trigger?

- The code B1B21 Chrysler may be triggered by a high resistance or open circuit in the wiring harness, a faulty squib (airbag detonator), or a problem with the airbag control module.

3. How serious is the OBDII code B1B21 Chrysler (Right Side Curtain Squib 1 Circuit High)?

- This code indicates a potential issue with the right side curtain airbag system, which could compromise the safety of passengers in the event of a side impact collision. It is important to address this issue promptly.

4. Can I continue driving with the OBDII code B1B21 Chrysler present?

- It is not recommended to continue driving with the B1B21 code active, as it signifies a problem with the right side curtain airbag system that could lead to non-deployment in the event of a crash.

5. How can I diagnose and repair the OBDII code B1B21 Chrysler?

- Diagnosing and repairing the B1B21 code typically involves inspecting the wiring harness for damage, testing the right side curtain squib for continuity, and checking the airbag control module for faults. Professional diagnosis is recommended.

6. Can resetting the OBDII code B1B21 Chrysler make the problem go away?

- Simply clearing the code without addressing the underlying issue will not solve the problem. It is crucial to diagnose and repair the root cause of the B1B21 code for proper functionality of the airbag system.

7. How much does it cost to fix the OBDII code B1B21 Chrysler?

- The cost of fixing the B1B21 code can vary depending on the specific cause of the issue, parts needed for repair, and labor costs. It is advisable to consult with a mechanic for an accurate estimate.

8. Are there any safety precautions I should take when working on the airbag system related to the B1B21 code?

- When working on the airbag system associated with the B1B21 code, it is crucial to disconnect the vehicle's battery and wait for at least 10 minutes before starting any repair to prevent accidental airbag deployment.

9. Will fixing the OBDII code B1B21 Chrysler require specialized tools or equipment?

- Diagnosing and repairing the B1B21 code may require specialized tools such as a multimeter for testing circuits and an airbag scan tool for accessing and resetting the airbag control module.

10. Can I fix the OBDII code B1B21 Chrysler on my own, or should I seek professional help?

- Due to the complexity and safety considerations involved in repairing the B1B21 code related to the airbag system, it is advisable to seek professional help from a qualified mechanic or technician experienced in handling airbag issues.