AutoCodes – Lexus – B1150 Lexus

B1150 Lexus Code - Occupant Classification System Malfunction

Quick Answer

The occupant classification system circuit consists of the Airbag Sensor Assembly Center and the occupant classification system. Common causes include Faulty Occupant classification system, Faulty Airbag Sensor Assembly Center, Right front seat wire. 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: B1150 Lexus indicates Occupant Classification System Malfunction.
Common causes: Common causes include Faulty Occupant classification system, Faulty Airbag Sensor Assembly Center, Right front seat wire.
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 8,024

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 Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1150 Lexus Description

The occupant classification system circuit consists of the Airbag Sensor Assembly Center and the occupant classification system. If the airbags sensor assy center receives signals from the occupant classification ECU, it determines whether or not the front passenger airbag assy and the front seat airbag assy sight should be operated.

OBDII Code B1150 Lexus - Occupant Classification System Malfunction - AutoCodes.com — B1150 Lexus Code - Occupant Classification System Malfunction

What does this mean?

What are the Possible Causes of the DTC B1150 Lexus?

Faulty Occupant classification system
Faulty Airbag Sensor Assembly Center
Right front seat wire

How to Fix the DTC B1150 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 B1150 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 B1150 Lexus code?

Need more information on how to fix the B1150 Lexus code? Get Access to Factory Service Manuals

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Get the B1150 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 B1150 Lexus Code

1. What are common symptoms of OBDII code B1150 in a Lexus related to the Occupant Classification System Malfunction?

- Common symptoms include the airbag warning light staying illuminated, the passenger airbag being disabled, and potential issues with the seat belt warning system.

2. What are the possible causes of OBDII code B1150 in a Lexus related to the Occupant Classification System Malfunction?

- Possible causes include a faulty occupant classification system sensor, damaged wiring or connectors, or a malfunctioning airbag control module.

3. How serious is the Occupant Classification System Malfunction indicated by OBDII code B1150 in a Lexus?

- This malfunction can affect the proper deployment of the passenger airbag in the event of a collision, making it a potentially serious safety concern that should be addressed promptly.

4. Can I still drive my Lexus with the OBDII code B1150 related to the Occupant Classification System Malfunction?

- While the vehicle may still be operable, it is recommended to have the issue diagnosed and repaired as soon as possible to ensure the safety features are functioning correctly.

5. How can I diagnose the Occupant Classification System Malfunction causing OBDII code B1150 in my Lexus?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, followed by inspecting the occupant classification system components for any visible damage or issues.

6. Are there any DIY repair tips for fixing the Occupant Classification System Malfunction associated with OBDII code B1150 in a Lexus?

- DIY repair for this issue is not recommended due to the complexity of the occupant classification system. It is best to have a qualified technician diagnose and repair the problem.

7. How much does it cost to repair the Occupant Classification System Malfunction indicated by OBDII code B1150 in a Lexus?

- Repair costs can vary depending on the exact cause of the malfunction, but it is advisable to budget for diagnostic fees, parts replacement, and labor costs, which can range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII codes clear the Occupant Classification System Malfunction indicated by code B1150 in a Lexus?

- While resetting the OBDII codes may temporarily clear the warning light, the underlying issue causing the malfunction will persist, and the code is likely to reappear until the problem is fixed.

9. Will the Occupant Classification System Malfunction associated with OBDII code B1150 affect the overall safety of my Lexus?

- Yes, as the malfunction may impact the proper functioning of the passenger airbag system, compromising the vehicle's safety in the event of a collision.

10. How long does it typically take to repair the Occupant Classification System Malfunction related to OBDII code B1150 in a Lexus?

- Repair times can vary based on the exact cause of the issue and the availability of replacement parts. In general, expect the repair to take a few hours to a full day at the dealership or repair shop.