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Engine-Codes – Scion – B1835 Scion

B1835 Scion Code - Short in Curtain Shield Squib Left Circuit

Quick Answer

The B1835 diagnostic trouble code for Scion vehicles indicates a short in the curtain shield squib left circuit. Common causes include Damaged wiring harness leading to the curtain shield squib, Faulty curtain shield squib (airbag inflator), Corrosion or poor connection 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
B1835 Scion indicates Short in Curtain Shield Squib Left Circuit.
Common causes
Common causes include Damaged wiring harness leading to the curtain shield squib, Faulty curtain shield squib (airbag inflator), Corrosion or poor connection 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 14, 2024
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Code B1835 Scion Description

The B1835 diagnostic trouble code for Scion vehicles indicates a short in the curtain shield squib left circuit. The curtain shield squib is a component of the vehicle's airbag system that is responsible for deploying the side curtain airbags in the event of a collision. A short in this circuit can prevent the airbag from deploying properly, compromising the safety of the vehicle occupants in the event of a side impact.

OBDII Code B1835 Scion - Short in Curtain Shield Squib Left Circuit
B1835 Scion Code - Short in Curtain Shield Squib Left Circuit

Common Causes of B1835 Scion

  1. Damaged wiring harness leading to the curtain shield squib
  2. Faulty curtain shield squib (airbag inflator)
  3. Corrosion or poor connection in the circuit
  4. Issues with the airbag control module
  5. Impact or collision that damaged the left side curtain airbag system

Symptoms of B1835 Scion

  1. Illumination of the airbag warning light on the dashboard
  2. Inability to turn off the airbag warning light even after resetting it
  3. Failure of the left side curtain airbag to deploy during a crash test
  4. Intermittent or erratic deployment of the left side curtain airbag

How to Fix B1835 Scion

  1. Diagnose the specific cause of the short in the curtain shield squib left circuit using a diagnostic scanner and multimeter.
  2. Inspect the wiring harness for any damage or corrosion and repair or replace as necessary.
  3. Test the curtain shield squib for proper functionality and replace if found to be faulty.
  4. Check the connections in the circuit and ensure they are secure and free of corrosion.
  5. Clear the diagnostic trouble code from the vehicle's computer and test the system to ensure the issue has been resolved.

Cost to Fix B1835 Scion

The cost of repairing a short in the curtain shield squib left circuit can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a few quotes from different shops to ensure you're getting a fair price.

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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 B1835 Scion Code

1. What are common symptoms of OBDII code B1835 in a Scion related to a short in the Curtain Shield Squib Left circuit?

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

2. What are possible causes of the OBDII code B1835 Scion error indicating a short in the Curtain Shield Squib Left circuit?

Possible causes include a faulty curtain shield airbag module, damaged wiring or connectors in the circuit, or a malfunctioning airbag control module.

3. How can I diagnose the issue causing the OBDII code B1835 in my Scion?

Diagnosing the issue involves using a diagnostic scan tool to retrieve the specific fault codes, inspecting the wiring and connectors in the Curtain Shield Squib Left circuit, and testing the components for proper functionality.

4. Can I continue driving my Scion with the OBDII code B1835 error present?

It is not recommended to continue driving the vehicle with this error as it indicates a potential issue with the curtain shield airbag system, which could compromise your safety in the event of a collision.

5. How can I repair the OBDII code B1835 Scion error related to a short in the Curtain Shield Squib Left circuit?

Repairing the issue may involve replacing the faulty curtain shield airbag module, repairing or replacing damaged wiring and connectors, or reprogramming the airbag control module.

6. Are there any safety precautions I should take when working on the airbag system to resolve the B1835 error?

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

7. Can I reset the OBDII code B1835 error in my Scion without fixing the underlying issue?

While you can reset the error code using a diagnostic scan tool, it is important to address the root cause of the problem to ensure the safety and functionality of the airbag system.

8. How much does it typically cost to repair the OBDII code B1835 Scion error caused by a short in the Curtain Shield Squib Left circuit?

The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Will fixing the OBDII code B1835 error in my Scion require specialized tools or expertise?

Repairing the issue may require specialized tools and expertise, particularly when working on the airbag system. It is recommended to consult a professional mechanic or dealership for proper diagnosis and repair.

10. Is the OBDII code B1835 Scion error related to a short in the Curtain Shield Squib Left circuit a common issue in these vehicles?

While not extremely common, issues with the curtain shield airbag system, including the B1835 error, can occur in Scion vehicles and should be addressed promptly to ensure safe operation.

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