AutoCodes – Lexus – B0118 Lexus

B0118 Lexus Code - Short To Positive 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: B0118 Lexus indicates Short To Positive 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 4,080

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 B0118 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 B0118 Lexus - Short To Positive In Left-Side Air Bag Module Squib Circuit - AutoCodes.com — B0118 Lexus Code - Short To Positive In Left-Side Air Bag Module Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B0118 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 B0118 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 B0118 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 B0118 Lexus code?

Need more information on how to fix the B0118 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0118 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 B0118 Lexus Code

1. What are common symptoms of OBDII code B0118 in a Lexus related to a short to positive in the left-side airbag module squib circuit?

The common symptoms include an illuminated airbag warning light on the dashboard, non-deployment of the left-side airbag in case of an accident, and potential diagnostic trouble codes stored in the vehicle's computer system.

2. What are the possible causes of OBDII code B0118 in a Lexus indicating a short to positive in the left-side airbag module squib circuit?

Possible causes include damaged wiring or connectors in the left-side airbag circuit, a faulty left-side airbag module squib, or a malfunction in the airbag control module.

3. How can I diagnose the issue causing OBDII code B0118 in my Lexus indicating a short to positive in the left-side airbag module squib circuit?

Diagnosing the issue involves using a scan tool to retrieve the specific diagnostic trouble code, inspecting the wiring and connectors in the left-side airbag circuit, and testing the left-side airbag module squib for continuity and resistance.

4. Is it safe to drive my Lexus with OBDII code B0118 indicating a short to positive in the left-side airbag module squib circuit?

It is not recommended to drive the vehicle with an active airbag fault code, as the left-side airbag may not deploy in case of an accident, compromising occupant safety.

5. Can I repair OBDII code B0118 indicating a short to positive in the left-side airbag module squib circuit on my Lexus myself?

While simple tasks like checking for loose connections can be done by DIY enthusiasts, diagnosing and repairing airbag system faults should be left to trained professionals due to safety concerns and the complexity of the system.

6. How much does it typically cost to repair OBDII code B0118 in a Lexus related to a short to positive in the left-side airbag module squib circuit?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing damaged wiring, connectors, or components in the left-side airbag circuit, which can range from a few hundred to over a thousand dollars.

7. Are there any recalls or technical service bulletins related to OBDII code B0118 in Lexus vehicles for a short to positive in the left-side airbag module squib circuit?

It is recommended to check with your local Lexus dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code in your vehicle.

8. Can resetting the OBDII system clear the B0118 fault code related to a short to positive in the left-side airbag module squib circuit in my Lexus?

Resetting the OBDII system may temporarily clear the fault code, but if the underlying issue causing the code is not addressed, it is likely to return. It is important to diagnose and repair the root cause of the problem.

9. Are there any safety precautions I should take when working on the airbag system to resolve OBDII code B0118 in my Lexus?

When working on the airbag system, always disconnect the vehicle's battery and wait at least 10 minutes before proceeding to avoid accidental airbag deployment. Additionally, follow proper safety procedures outlined in the vehicle's service manual.

10. How long does it typically take to repair OBDII code B0118 indicating a short to positive in the left-side airbag module squib circuit on a Lexus?

The repair time can vary based on the exact cause of the issue and the availability of parts. In general, a skilled mechanic can complete the repair within a few hours to a full day, depending on the complexity of the diagnosis and repair process.