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B0137 Toyota Code - Short To Ground Left Seat Belt Pretensioner Squib Circuit

Quick Answer

The B0137 code for Toyota vehicles indicates a Short To Ground in the Left Seat Belt Pretensioner Squib Circuit. Common causes include Damaged wiring or connectors in the seat belt pretensioner circuit, Corrosion in the circuitry, Faulty seat belt pretensioner squib. 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
B0137 Toyota indicates Short To Ground Left Seat Belt Pretensioner Squib Circuit.
Common causes
Common causes include Damaged wiring or connectors in the seat belt pretensioner circuit, Corrosion in the circuitry, Faulty seat belt pretensioner squib.
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 06, 2024
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Code B0137 Toyota Description

The B0137 code for Toyota vehicles indicates a Short To Ground in the Left Seat Belt Pretensioner Squib Circuit. This means that there is an electrical issue in the circuit responsible for deploying the seat belt pretensioner in case of a collision. The seat belt pretensioner is a safety feature that tightens the seat belt in the event of a crash, helping to restrain the occupant and reduce the risk of injury.

OBDII Code B0137 Toyota - Short To Ground Left Seat Belt Pretensioner Squib Circuit
B0137 Toyota Code - Short To Ground Left Seat Belt Pretensioner Squib Circuit

Common Causes of B0137 Toyota

  1. Damaged wiring or connectors in the seat belt pretensioner circuit
  2. Corrosion in the circuitry
  3. Faulty seat belt pretensioner squib
  4. Impact or damage to the vehicle that affects the seat belt pretensioner system
  5. Issues with the SRS control module

Symptoms of B0137 Toyota

  1. Illumination of the airbag warning light on the dashboard
  2. Inability to retract or extend the seat belt
  3. Erratic behavior of the seat belt pretensioner
  4. Failure of the seat belt pretensioner to deploy in a crash

How to Fix B0137 Toyota

  1. Diagnose the specific cause of the short to ground in the left seat belt pretensioner squib circuit using a diagnostic tool.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
  3. Test the seat belt pretensioner squib to determine if it is functioning correctly, replacing it if needed.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and verify that the issue has been resolved.
  5. Perform a final test to ensure that the seat belt pretensioner system is operating properly.

Cost to Fix B0137 Toyota

The cost of repairing a short to ground in the left seat belt pretensioner squib circuit can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem. It's recommended to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model.

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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 B0137 Toyota Code

1. What are the common symptoms of OBDII code B0137 in a Toyota related to the Left Seat Belt Pretensioner Squib Circuit?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the seat belt pretensioner in the event of a collision.

2. What does the "Short to Ground" aspect of the B0137 code indicate?

- The "Short to Ground" error means that there is an electrical issue causing the left seat belt pretensioner squib circuit to have low resistance to ground.

3. What are some possible causes of the B0137 code in a Toyota?

- Possible causes include damaged wiring or connectors in the left seat belt pretensioner circuit, a faulty seat belt pretensioner, or a problem with the airbag control module.

4. How can I diagnose the source of the B0137 code in my Toyota?

- To diagnose the issue, you may need to visually inspect the wiring and connectors in the left seat belt pretensioner circuit, perform electrical tests, and use a scan tool to retrieve specific diagnostic trouble codes.

5. Can I still drive my Toyota with the B0137 code present?

- It is not recommended to drive the vehicle with an active B0137 code, as it may indicate a safety issue with the seat belt pretensioner system. It is advisable to address the problem promptly.

6. Is it possible to repair the B0137 code on my Toyota at home?

- While basic troubleshooting like checking connections and fuses can be done at home, repairing the B0137 code may require specialized tools and expertise. It is recommended to consult a professional mechanic.

7. How much does it typically cost to repair the B0137 code in a Toyota?

- The cost of repairing the B0137 code can vary depending on the underlying cause. It may range from a simple fix like replacing a damaged connector to more extensive repairs involving the seat belt pretensioner or airbag system.

8. Can resetting the OBDII system clear the B0137 code in a Toyota?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the B0137 code is not addressed, it is likely to reappear. It is important to diagnose and fix the root cause.

9. Are there any safety risks associated with ignoring the B0137 code in a Toyota?

- Ignoring the B0137 code can pose safety risks, as it indicates a potential malfunction in the seat belt pretensioner system, which is designed to enhance occupant protection in the event of a crash.

10. How long does it typically take to repair the B0137 code in a Toyota?

- The repair time for the B0137 code can vary based on the specific cause of the issue. Simple fixes may take less than an hour, while more complex repairs could require several hours or even days if parts need to be ordered.

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