Engine-Codes.com
Engine-Codes – Generic – B0137

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

Quick Answer

The B0137 diagnostic trouble code (DTC) indicates a Short To Ground in the Left Seat Belt Pretensioner Squib Circuit. Common causes include Wiring harness damage or wear leading to a short circuit, Faulty seat belt pretensioner squib, Corrosion or poor connections in the circuit. 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 indicates Short To Ground Left Seat Belt Pretensioner Squib Circuit.
Common causes
Common causes include Wiring harness damage or wear leading to a short circuit, Faulty seat belt pretensioner squib, Corrosion or poor connections in the circuit.
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 07, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B0137 Description

The B0137 diagnostic trouble code (DTC) indicates a Short To Ground in the Left Seat Belt Pretensioner Squib Circuit. In simpler terms, this means that there is an electrical issue in the circuit responsible for the deployment of the left seat belt pretensioner in the event of a collision. The seat belt pretensioner is a safety feature that removes slack from the seat belt in a crash, ensuring the occupant is held securely in place.

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

Common Causes of B0137

  1. Wiring harness damage or wear leading to a short circuit.
  2. Faulty seat belt pretensioner squib.
  3. Corrosion or poor connections in the circuit.
  4. Issues with the airbag control module.
  5. Previous repair work on the seat belt pretensioner system that was not done correctly.

Symptoms of B0137

  1. Illumination of the airbag warning light on the dashboard.
  2. Inability of the left seat belt pretensioner to deploy in a crash.
  3. Intermittent or non-functioning seat belt pretensioner.
  4. Fault codes related to the seat belt pretensioner system stored in the vehicle's computer.

How to Fix B0137

  1. Begin by conducting a thorough visual inspection of the wiring harness and connectors associated with the left seat belt pretensioner squib. Look for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity and resistance of the wiring in the circuit to identify the location of the short to ground.
  3. If the issue is with the seat belt pretensioner squib itself, it will need to be replaced. This typically involves removing the seat belt assembly and accessing the squib unit.
  4. Repair any damaged wiring or connectors and ensure all connections are secure.
  5. Clear the fault codes from the vehicle's computer using a diagnostic scan tool after completing the repair to reset the system.

Cost to Fix B0137

The cost of repairing a Short To Ground in the Left Seat Belt Pretensioner Squib Circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. It's important to note that diagnostic time and labor rates can vary significantly between different auto repair shops, so it's advisable to obtain quotes from multiple sources to ensure you are getting a fair price. Additionally, the cost may be higher if the issue requires extensive troubleshooting or if specialized tools are needed for the repair.

Need more information about the B0137 code?

Need more information on how to fix the B0137 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0137 code diagnosed by a professional: Find a repair shop in your area

Code B0137 Information for Specific Makes

  • B0137 Lexus — Short To Ground Left Seat Belt Pretensioner Squib Circuit
  • B0137 Scion — Short To Ground Left Seat Belt Pretensioner Squib Circuit
  • B0137 Toyota — Short To Ground Left Seat Belt Pretensioner Squib Circuit

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 Code

1. What does the OBDII code B0137 mean?

B0137 indicates a short to ground issue in the left seat belt pretensioner squib circuit, which is part of the airbag system.

2. What are the common symptoms of code B0137?

Symptoms include the airbag warning light illuminating, potential diagnostic trouble code storage, and possible deactivation of the airbag system.

3. What causes the B0137 code to appear?

Common causes include damaged wiring, corroded connectors, a faulty seat belt pretensioner, or a short to ground in the circuit.

4. Can I still drive with code B0137?

While the vehicle may still operate, the airbag system might not function correctly, which compromises safety in the event of an accident.

5. How do I diagnose the B0137 code?

Start by visually inspecting the pretensioner wiring and connectors for damage, test for continuity in the circuit, and check for a short to ground.

6. How is the B0137 code typically repaired?

Repairs may include replacing damaged wiring, cleaning or replacing corroded connectors, or replacing the faulty seat belt pretensioner.

7. Will clearing the code fix the issue permanently?

No, clearing the code without addressing the root cause will only temporarily turn off the warning light, and the code will likely return.

8. What tools are needed to fix a B0137 code?

You'll need an OBDII scanner, a multimeter for electrical testing, and potentially wiring repair tools or parts for replacement.

9. Is code B0137 covered under warranty?

It depends on your vehicle's warranty coverage; safety-related components like the airbag system may be covered under extended warranties.

10. Should I attempt to repair the B0137 code myself?

If you're experienced with automotive electrical systems, you can attempt the repair, but for safety-critical components like the airbag system, professional service is recommended.

Discuss the causes and fixes for B0137 OBDII Code

Submit a New Comment

Code B0137 comments

No comments found for this page.