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Engine-Codes – Scion – B1847 Scion

B1847 Scion Code - Short To Ground In Curtain Shield Squib Left 2nd Step Circuit

Quick Answer

The B1847 diagnostic trouble code (DTC) for Scion vehicles indicates a short to ground in the curtain shield squib left 2nd step circuit. Common causes include Wiring harness damage or wear leading to a short to ground, Faulty curtain shield squib component, 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
B1847 Scion indicates Short To Ground In Curtain Shield Squib Left 2nd Step Circuit.
Common causes
Common causes include Wiring harness damage or wear leading to a short to ground, Faulty curtain shield squib component, 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 17, 2024
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Code B1847 Scion Description

The B1847 diagnostic trouble code (DTC) for Scion vehicles indicates a short to ground in the curtain shield squib left 2nd step circuit. In simpler terms, this code points to an issue with the airbag system's left side curtain shield squib, which is a component responsible for deploying the airbag in the event of a collision. The curtain shield squib is an integral part of the vehicle's safety system, designed to protect occupants in the event of a side impact.

OBDII Code B1847 Scion - Short To Ground In Curtain Shield Squib Left 2nd Step Circuit
B1847 Scion Code - Short To Ground In Curtain Shield Squib Left 2nd Step Circuit

Common Causes of B1847 Scion

  1. Wiring harness damage or wear leading to a short to ground.
  2. Faulty curtain shield squib component.
  3. Corrosion or poor connections in the circuit.
  4. Impact or collision causing damage to the airbag system.
  5. Electrical issues such as a blown fuse or relay malfunction.

Symptoms of B1847 Scion

  1. Airbag warning light illuminated on the dashboard.
  2. Inability to deploy the left side curtain airbag.
  3. Fault codes related to the airbag system stored in the vehicle's computer.
  4. Loss of continuity in the left side curtain shield squib circuit.

How to Fix B1847 Scion

  1. Begin by disconnecting the vehicle's battery to prevent accidental airbag deployment.
  2. Inspect the wiring harness for any visible damage, corrosion, or wear. Repair or replace as necessary.
  3. Check the curtain shield squib component for faults or damage. Replace if needed.
  4. Test the circuit for continuity and repair any poor connections.
  5. Clear the DTC codes from the vehicle's computer and test the airbag system to ensure proper functionality.

Cost to Fix B1847 Scion

The cost of repairing a short to ground in the curtain shield squib left 2nd step circuit can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair for this issue can range from $200 to $500, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Additionally, the cost of diagnosis and any additional parts needed may affect the overall repair cost. It is recommended to consult with a qualified mechanic or repair shop 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 B1847 Scion Code

1. What does the OBDII code B1847 mean in a Scion?

B1847 indicates a short to ground in the curtain shield squib (airbag) left 2nd step circuit, which is part of the vehicle's airbag system.

2. What are the common symptoms of the B1847 code?

Symptoms include an illuminated airbag warning light, potential error messages on the dashboard, and the airbag system being disabled.

3. What causes the B1847 code to appear?

The code is typically caused by damaged or corroded wiring, a faulty airbag squib, a short circuit in the wiring harness, or issues with the airbag control module.

4. Is it safe to drive with the B1847 code?

No, it is not safe to drive with this code as it indicates a fault in the airbag system, which may prevent proper airbag deployment in the event of a collision.

5. How do I diagnose the B1847 code?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage or corrosion, and testing the curtain shield squib and related circuits.

6. Can I fix the B1847 code myself?

If you have experience with automotive electrical systems, you can inspect and repair wiring or connectors, but airbag systems are sensitive and should ideally be serviced by a professional.

7. How much does it cost to repair the B1847 code?

Repair costs vary, but fixing damaged wiring or connectors can range from $100 to $300, while replacing the airbag squib or module can cost significantly more.

8. Can a faulty airbag control module trigger the B1847 code?

Yes, a malfunctioning airbag control module can sometimes cause the B1847 code, though this is less common than wiring issues.

9. How can I prevent the B1847 code from occurring?

Regular maintenance, inspecting the airbag system during routine service, and addressing any wiring issues promptly can help prevent this code.

10. Will clearing the B1847 code with a scanner fix the problem?

Clearing the code will turn off the warning light temporarily, but the underlying issue must be repaired to prevent the code from returning and ensure the airbag system functions properly.

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