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Engine-Codes – Lexus – B1941 Lexus

B1941 Lexus Code - Open in Selectable Force Limiter Squib Right Circuit

Quick Answer

The B1941 diagnostic trouble code for Lexus vehicles indicates an open circuit in the selectable force limiter squib right circuit. Common causes include Faulty selectable force limiter squib, Wiring harness damage or corrosion, Loose or disconnected electrical connectors. 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
B1941 Lexus indicates Open in Selectable Force Limiter Squib Right Circuit.
Common causes
Common causes include Faulty selectable force limiter squib, Wiring harness damage or corrosion, Loose or disconnected electrical connectors.
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 13, 2024
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Code B1941 Lexus Description

The B1941 diagnostic trouble code for Lexus vehicles indicates an open circuit in the selectable force limiter squib right circuit. The selectable force limiter squib is a component of the vehicle's supplemental restraint system (SRS), specifically the seatbelt system. The purpose of the force limiter squib is to control the amount of force applied by the seatbelt during a collision, helping to reduce the risk of injury to the occupant.

OBDII Code B1941 Lexus - Open in Selectable Force Limiter Squib Right Circuit
B1941 Lexus Code - Open in Selectable Force Limiter Squib Right Circuit

Common Causes of B1941 Lexus

  1. Faulty selectable force limiter squib
  2. Wiring harness damage or corrosion
  3. Loose or disconnected electrical connectors
  4. Impact or collision that damaged the seatbelt system
  5. Electronic control unit (ECU) malfunction

Symptoms of B1941 Lexus

  1. Airbag warning light illuminated on the dashboard
  2. Seatbelt warning light may be illuminated
  3. Inoperative seatbelt pretensioner
  4. Faulty seatbelt retractor
  5. Increased risk of injury in the event of a collision

How to Fix B1941 Lexus

  1. Begin by diagnosing the specific cause of the open circuit, using a diagnostic scanner to retrieve the fault codes and pinpoint the issue.
  2. Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace any damaged wires or connectors.
  3. Test the selectable force limiter squib for proper functionality. If faulty, replace the squib with a new one.
  4. Clear the fault codes from the ECU memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the SRS system.

Cost to Fix B1941 Lexus

The cost of repairing an open circuit in the selectable force limiter squib right circuit can vary depending on the specific cause of the issue and the cost of parts and labor. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $100 to $200. Overall, the total repair cost for this issue may fall between $200 and $500. It is important to note that labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate.

Need more information about the B1941 Lexus code?

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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 B1941 Lexus Code

1. What are the common symptoms of OBDII code B1941 in a Lexus related to an open in the selectable force limiter squib right circuit?

- The common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the airbag in case of an accident.

2. What causes the OBDII code B1941 in a Lexus indicating an open in the selectable force limiter squib right circuit?

- The code is typically triggered by a fault in the wiring harness, a loose connection, or a faulty selectable force limiter squib right component.

3. How can I diagnose the issue related to code B1941 in a Lexus?

- A thorough inspection of the wiring harness, connectors, and the selectable force limiter squib right component is necessary to pinpoint the exact cause of the open circuit fault.

4. Can I still drive my Lexus with the B1941 code present?

- It is not advisable to drive the vehicle with the B1941 code active as it may compromise the proper functioning of the airbag system in the event of a collision.

5. How can I repair the open in the selectable force limiter squib right circuit in a Lexus?

- Repairing the issue involves locating and repairing the open circuit in the wiring harness, ensuring all connections are secure, or replacing the faulty selectable force limiter squib right component.

6. Is it possible to reset the B1941 code in a Lexus without fixing the underlying issue?

- While it is possible to clear the code temporarily, it will likely reappear until the root cause of the open circuit fault is addressed and resolved.

7. Are there any safety risks associated with ignoring the B1941 code in a Lexus?

- Ignoring the B1941 code can pose serious safety risks as it may lead to the airbag system not deploying properly in the event of a collision, putting occupants at a higher risk of injury.

8. How much does it typically cost to repair the B1941 code in a Lexus at a mechanic or dealership?

- The cost of repairing the B1941 code can vary depending on the exact cause of the fault, but it generally ranges from $200 to $500, including parts and labor.

9. Can I fix the B1941 code issue in a Lexus by myself, or do I need to take it to a professional?

- If you have experience with automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair the issue yourself. However, if you are unsure, it's recommended to seek help from a professional mechanic.

10. How long does it take to repair the B1941 code issue in a Lexus?

- The repair time can vary based on the complexity of the issue and the expertise of the person performing the repair. Typically, it can take anywhere from 1 to 3 hours to diagnose and fix the problem.

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