AutoCodes – Lexus – B1835 Lexus

B1835 Lexus Code - Short in Curtain Shield Squib Left Circuit

Quick Answer

The Curtain Shield Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Curtain Shield Airbag Assembly Left (LH). Common causes include Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left), Curtain Shield Airbag Assembly Left harness is open or shorted, Curtain Shield 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: B1835 Lexus indicates Short in Curtain Shield Squib Left Circuit.
Common causes: Common causes include Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left), Curtain Shield Airbag Assembly Left harness is open or shorted, Curtain Shield 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,380

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 Dec 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1835 Lexus Description

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

OBDII Code B1835 Lexus - Short in Curtain Shield Squib Left Circuit - AutoCodes.com — B1835 Lexus Code - Short in Curtain Shield Squib Left Circuit

What does this mean?

What are the Possible Causes of the DTC B1835 Lexus?

Faulty Curtain Shield Airbag Assembly Left (LH) (Curtain Shield Squib Left)
Curtain Shield Airbag Assembly Left harness is open or shorted
Curtain Shield Airbag Assembly Left circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1835 Lexus?

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 B1835 Lexus 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 B1835 Lexus code?

Need more information on how to fix the B1835 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1835 Lexus 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 B1835 Lexus Code

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

The common symptoms include the airbag warning light being illuminated on the dashboard and potential issues with the curtain airbag system.

2. What can cause the OBDII code B1835 "Short in Curtain Shield Squib Left Circuit" in a Lexus?

Common causes include a faulty curtain shield squib (airbag) on the left side, damaged wiring or connectors in the circuit, or a malfunction in the airbag control module.

3. How serious is the OBDII code B1835 in a Lexus?

This code indicates a problem with the curtain airbag system, which is a crucial safety feature in the vehicle. It is important to address this issue promptly to ensure the airbags deploy correctly in case of an accident.

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

It is not recommended to drive the vehicle with this code active, as it indicates a potential issue with the airbag system. The airbags may not deploy properly in the event of a collision, compromising passenger safety.

5. How can I diagnose and repair the OBDII code B1835 in my Lexus?

Diagnosis typically involves using a scan tool to retrieve the specific details of the code. Repair may involve inspecting and repairing or replacing the curtain shield squib, checking and repairing wiring/connectors, or addressing any issues with the airbag control module.

6. Is it possible to reset the OBDII code B1835 in a Lexus without fixing the underlying issue?

While clearing the code may temporarily turn off the warning light, the underlying problem with the airbag system will persist. It is crucial to address the root cause of the code to ensure the airbags function correctly.

7. How much does it cost to repair the OBDII code B1835 in a Lexus?

The cost of repair can vary depending on the specific cause of the code, parts needed, and labor costs. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Can I fix the OBDII code B1835 in my Lexus myself?

Repairing this code may involve complex airbag system components, so it is recommended to have the issue diagnosed and repaired by a qualified mechanic with experience in handling airbag systems.

9. Are there any safety precautions I should take when working on the airbag system to fix the OBDII code B1835 in my Lexus?

It is crucial to disconnect the vehicle battery and wait for the airbag system to discharge before working on any components related to the airbag system. Safety procedures must be followed to avoid accidental deployment of the airbags.

10. How often does the OBDII code B1835 occur in Lexus vehicles?

While the frequency may vary, issues related to the curtain shield squib circuit can occur in Lexus vehicles equipped with airbag systems. Regular maintenance and prompt attention to warning lights can help prevent such issues.