B1855 Toyota 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 Toyota 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.
Code B1855 Toyota Description
What are the Possible Causes of the DTC B1855 Toyota?
- 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 Toyota?
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 Toyota 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.
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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.
Frequently Asked Questions about B1855 Toyota Code
1. What are the common symptoms of OBDII code B1855 Toyota (Short In Rear Side Squib Left Circuit)?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the airbag in the event of a collision.
2. What are the possible causes of OBDII code B1855 Toyota?
- The code B1855 indicates a short in the rear side squib left circuit, which can be caused by wiring issues, a faulty squib (airbag detonator), or a problem with the airbag control module.
3. How can I diagnose the source of the short in the rear side squib left circuit?
- Diagnosing the issue requires using a scan tool to retrieve the specific fault codes, inspecting the wiring harness for damage or corrosion, and testing the components in the airbag system.
4. Is it safe to drive with OBDII code B1855 Toyota present?
- It is not recommended to drive the vehicle with an active airbag fault code like B1855, as it may compromise the functionality of the airbag system in the event of a collision.
5. Can I reset the OBDII code B1855 Toyota on my own?
- While you can clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the fault code to prevent potential safety risks.
6. How much does it typically cost to repair OBDII code B1855 Toyota?
- The cost of repair can vary depending on the specific cause of the fault, but it may involve replacing damaged wiring, the squib, or the airbag control module, and can range from a few hundred to over a thousand dollars.
7. Are there any safety precautions to consider when working on the airbag system related to code B1855?
- Always disconnect the vehicle's battery and wait for at least 10 minutes before working on the airbag system to avoid accidental deployment, and follow proper safety procedures outlined in the vehicle's service manual.
8. Can a DIY enthusiast repair OBDII code B1855 Toyota at home?
- Repairing airbag-related fault codes like B1855 requires specialized knowledge and tools, so it is recommended to seek professional assistance to ensure the job is done correctly and safely.
9. How long does it take to repair OBDII code B1855 Toyota?
- The repair time can vary depending on the extent of the issue and the availability of parts, but it typically takes a few hours to a full day to diagnose and fix the short in the rear side squib left circuit.
10. Will fixing OBDII code B1855 Toyota affect the vehicle's airbag system's functionality?
- Addressing the underlying cause of the fault code and repairing it properly should restore the airbag system's functionality and ensure it operates correctly in the event of an accident.
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