AutoCodes – Scion – B1855 Scion

B1855 Scion Code - Short In Rear Side Squib Left Circuit

Quick Answer

The Rear Side Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Rear Seat Side Airbag Assembly Left (LH). Common causes include Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit), Rear Seat Side Airbag Assembly Left harness is open or shorted, Rear Seat Side Airbag Assembly Left circuit poor electrical connection. 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: B1855 Scion indicates Short In Rear Side Squib Left Circuit.
Common causes: Common causes include Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit), Rear Seat Side Airbag Assembly Left harness is open or shorted, Rear Seat Side Airbag Assembly Left circuit poor electrical connection.
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.

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Code Popularity 586

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1855 Scion Description

The Rear Side Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Rear Seat Side Airbag Assembly Left (LH). The circuit instructs the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected in the Rear Side Squib Left Circuit.

OBDII Code B1855 Scion - Short In Rear Side Squib Left Circuit - AutoCodes.com — B1855 Scion Code - Short In Rear Side Squib Left Circuit

What does this mean?

What are the Possible Causes of the DTC B1855 Scion?

Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit)
Rear Seat Side Airbag Assembly Left harness is open or shorted
Rear Seat Side Airbag Assembly Left circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1855 Scion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1855 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1855 Scion code?

Need more information on how to fix the B1855 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1855 Scion code diagnosed by a professional: Find a repair shop in your area

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 B1855 Scion Code

1. What are the common symptoms of OBDII code B1855 in a Scion related to a short in the rear side squib left circuit?

Common symptoms include the airbag warning light staying illuminated on the dashboard and a potential loss of functionality in the left side airbag system.

2. What could cause the OBDII code B1855 in a Scion, indicating a short in the rear side squib left circuit?

Possible causes include a damaged wiring harness, a faulty side squib left airbag module, or a poor connection in the circuit.

3. How can I diagnose the OBDII code B1855 in my Scion for a short in the rear side squib left circuit?

Diagnosis involves using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors for damage, and testing the side squib left airbag module for proper functionality.

4. Is it safe to drive my Scion with the OBDII code B1855 present, signaling a short in the rear side squib left circuit?

It is not recommended to drive the vehicle with this fault code active, as it indicates a potential issue with the airbag system that could compromise safety in the event of a collision.

5. Can I reset the OBDII code B1855 in my Scion without addressing the underlying short in the rear side squib left circuit issue?

While you can clear the code temporarily, it is crucial to diagnose and repair the root cause of the problem to ensure the proper functioning of the airbag system.

6. What are some repair tips for resolving the OBDII code B1855 in a Scion related to a short in the rear side squib left circuit?

Repair tips include carefully inspecting and repairing any damaged wiring, replacing the faulty side squib left airbag module if necessary, and ensuring all connections are secure.

7. How much does it typically cost to repair the OBDII code B1855 in a Scion caused by a short in the rear side squib left circuit?

The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it is advisable to consult a professional for an accurate estimate.

8. Can I fix the OBDII code B1855 indicating a short in the rear side squib left circuit in my Scion without professional help?

While some DIY enthusiasts may attempt the repair, dealing with airbag systems requires specialized knowledge and tools, so it's recommended to seek assistance from a qualified technician.

9. Are there any recalls or service bulletins related to the OBDII code B1855 in Scion vehicles for a short in the rear side squib left circuit?

It's advisable to check with the manufacturer or authorized dealerships for any relevant recalls or service bulletins that may address this specific issue in Scion vehicles.

10. How can I prevent the OBDII code B1855 from reoccurring in my Scion due to a short in the rear side squib left circuit?

To prevent the code from coming back, ensure proper installation and maintenance of the airbag system components, avoid any physical damage to wiring harnesses, and address any warning lights promptly.