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Engine-Codes – Scion – B1925 Scion

B1925 Scion Code - Short In Rear Pretensioner Squib LH Circuit

Quick Answer

The B1925 diagnostic trouble code for Scion vehicles indicates a short in the rear pretensioner squib LH circuit. Common causes include Wiring damage or corrosion in the rear pretensioner squib LH circuit, Faulty pretensioner squib component, Issues with the vehicle's electrical system. 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
B1925 Scion indicates Short In Rear Pretensioner Squib LH Circuit.
Common causes
Common causes include Wiring damage or corrosion in the rear pretensioner squib LH circuit, Faulty pretensioner squib component, Issues with the vehicle's electrical system.
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 12, 2024
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Code B1925 Scion Description

The B1925 diagnostic trouble code for Scion vehicles indicates a short in the rear pretensioner squib LH circuit. This code typically points to an issue with the left-hand side rear seatbelt pretensioner, which is a safety feature designed to tighten the seatbelt in the event of a collision to securely restrain the occupant. The pretensioner squib is an explosive device that activates in milliseconds during a crash, pulling the seatbelt tight to minimize the forward movement of the occupant and reduce the risk of injury.

OBDII Code B1925 Scion - Short In Rear Pretensioner Squib LH Circuit
B1925 Scion Code - Short In Rear Pretensioner Squib LH Circuit

Common Causes of B1925 Scion

  1. Wiring damage or corrosion in the rear pretensioner squib LH circuit.
  2. Faulty pretensioner squib component.
  3. Issues with the vehicle's electrical system.
  4. Impact or collision that damaged the pretensioner squib or wiring.

Symptoms of B1925 Scion

  1. Airbag warning light illuminated on the dashboard.
  2. Seatbelt warning light flashing or staying on.
  3. Inability to properly fasten or adjust the rear seatbelt.
  4. A noticeable decrease in overall safety performance of the vehicle.

How to Fix B1925 Scion

  1. Begin by diagnosing the specific cause of the short in the rear pretensioner squib LH circuit using a diagnostic scanner.
  2. Inspect the wiring and connections in the rear pretensioner squib LH circuit for damage or corrosion.
  3. Replace the faulty rear pretensioner squib component if necessary.
  4. Clear the diagnostic trouble code from the vehicle's computer system.
  5. Test the repaired system to ensure that the rear seatbelt pretensioner is functioning correctly.

Cost to Fix B1925 Scion

The cost of repairing a short in the rear pretensioner squib LH circuit can vary depending on the extent of the damage, the specific components that need to be replaced, and the labor rates of the auto repair shop. Generally, the repair costs for this issue can range from $200 to $500, including parts and labor. It's important to note that the diagnosis time and labor rates at auto repair shops can vary, so it's advisable to consult with a professional for a more accurate estimate based on your specific vehicle and location.

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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 B1925 Scion Code

1. What are the common symptoms of OBDII code B1925 in a Scion related to a short in the rear pretensioner squib LH circuit?

The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the seatbelt pretensioner system.

2. What causes the OBDII code B1925 in a Scion indicating a short in the rear pretensioner squib LH circuit?

The code is typically triggered by a short circuit in the wiring harness or connector associated with the left-hand rear seatbelt pretensioner squib.

3. How can I diagnose the OBDII code B1925 in a Scion for a short in the rear pretensioner squib LH circuit?

Diagnosis involves inspecting the wiring harness, connectors, and the left-hand rear seatbelt pretensioner squib for any visible damage or signs of a short circuit.

4. Can I drive my Scion with the OBDII code B1925 indicating a short in the rear pretensioner squib LH circuit?

It is not recommended to drive your vehicle with this code active, as it may affect the proper deployment of the seatbelt pretensioner system in the event of a collision.

5. How do I repair the OBDII code B1925 in a Scion for a short in the rear pretensioner squib LH circuit?

Repairing this issue typically involves repairing or replacing the damaged wiring harness, connector, or left-hand rear seatbelt pretensioner squib as necessary.

6. Is it possible to reset the OBDII code B1925 in a Scion after fixing the short in the rear pretensioner squib LH circuit?

Once the underlying issue causing the code has been repaired, you can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

7. Are there any safety concerns associated with the OBDII code B1925 in a Scion related to a short in the rear pretensioner squib LH circuit?

Yes, addressing this code promptly is crucial to ensure the proper functioning of the seatbelt pretensioner system, which is designed to enhance occupant safety in the event of a crash.

8. Can a DIY enthusiast fix the OBDII code B1925 in a Scion for a short in the rear pretensioner squib LH circuit?

While some DIYers may have the skills to diagnose and repair wiring issues, it is recommended to have this particular problem addressed by a qualified technician due to safety concerns.

9. How common is the OBDII code B1925 in Scion vehicles indicating a short in the rear pretensioner squib LH circuit?

While not extremely common, this code can occur in Scion vehicles with issues related to the left-hand rear seatbelt pretensioner system.

10. Will the OBDII code B1925 in a Scion for a short in the rear pretensioner squib LH circuit affect the overall performance of the vehicle?

This code should not affect the driving performance of the vehicle but may impact the proper functioning of the seatbelt pretensioner system in the event of a collision.

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