AutoCodes – Lexus – B0115 Lexus

B0115 Lexus Code - Short In Left-Side Air Bag Module Squib Circuit

Quick Answer

The side air bag module squib circuit consists of the air bag sensor assembly and side air bag module. Common causes include Faulty Left-Side Air Bag Module, Left-Side Air Bag Module harness is open or shorted, Left-Side Air Bag Module 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: B0115 Lexus indicates Short In Left-Side Air Bag Module Squib Circuit.
Common causes: Common causes include Faulty Left-Side Air Bag Module, Left-Side Air Bag Module harness is open or shorted, Left-Side Air Bag Module 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 4,554

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0115 Lexus Description

The side air bag module squib circuit consists of the air bag sensor assembly and side air bag module. The squib circuit causes the side air bag to deploy when deployment conditions are satisfied. The Air Bag Control Module monitors the Left-Side Air Bag Module. The Air Bag Control Module sets the OBDII code when the Left-Side Air Bag Module is not to factory specifications.

OBDII Code B0115 Lexus - Short In Left-Side Air Bag Module Squib Circuit - AutoCodes.com — B0115 Lexus Code - Short In Left-Side Air Bag Module Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B0115 Lexus?

Faulty Left-Side Air Bag Module
Left-Side Air Bag Module harness is open or shorted
Left-Side Air Bag Module circuit poor electrical connection
Faulty Air Bag Control Module

How to Fix the DTC B0115 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 B0115 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 B0115 Lexus code?

Need more information on how to fix the B0115 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0115 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 B0115 Lexus Code

1. What are the common symptoms of OBDII code B0115 in a Lexus related to a short in the left-side airbag module squib circuit?

The common symptoms include the airbag warning light illuminating on the dashboard and potential failure of the left-side airbag system.

2. What are the possible causes of OBDII code B0115 in a Lexus indicating a short in the left-side airbag module squib circuit?

Potential causes may include a short circuit in the wiring harness, a malfunctioning airbag module squib, or a faulty connection in the airbag system.

3. How can I diagnose OBDII code B0115 in a Lexus for a short in the left-side airbag module squib circuit?

Diagnosis typically involves using a scan tool to retrieve the specific trouble code, inspecting the airbag system components for visible damage, and testing the wiring for continuity.

4. Is it safe to drive a Lexus with OBDII code B0115 indicating a short in the left-side airbag module squib circuit?

It is not recommended to drive the vehicle with this code present, as it may compromise the proper functioning of the left-side airbag system in the event of a collision.

5. Can I reset OBDII code B0115 in a Lexus related to a short in the left-side airbag module squib circuit?

While you can clear the code with a scan tool, it is crucial to address the underlying issue causing the fault code to prevent potential safety hazards.

6. What are some repair tips for fixing OBDII code B0115 in a Lexus due to a short in the left-side airbag module squib circuit?

Repair tips may include checking and repairing any damaged wiring, replacing the faulty airbag module squib, and ensuring all connections in the airbag system are secure.

7. How much does it typically cost to repair OBDII code B0115 in a Lexus associated with a short in the left-side airbag module squib 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. Are there any safety precautions to consider when working on OBDII code B0115 in a Lexus concerning a short in the left-side airbag module squib circuit?

It is crucial to disconnect the vehicle's battery before working on the airbag system to prevent accidental deployment and follow proper safety procedures outlined in the vehicle's service manual.

9. Can OBDII code B0115 in a Lexus related to a short in the left-side airbag module squib circuit be a DIY fix?

While some minor repairs like checking connections or replacing fuses may be DIY-friendly, diagnosing and repairing complex airbag system issues should be left to experienced professionals.

10. How can I prevent OBDII code B0115 from recurring in my Lexus after repairing a short in the left-side airbag module squib circuit?

To prevent code recurrence, ensure all repairs are done correctly, conduct regular maintenance checks on the airbag system, and address any issues promptly to avoid further damage.