AutoCodes – Lexus – B1145 Lexus

B1145 Lexus Code - Door Side Airbag Sensor Malfunction

Quick Answer

The Door Side Airbag Sensor (Left Side) circuit consists of the airbag sensor assembly and Door Side Airbag Sensor (Left Side). Common causes include Faulty Door Side Airbag Sensor (Left Side), Door Side Airbag Sensor (Left Side) harness is open or shorted, Door Side Airbag Sensor (Left Side) 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: B1145 Lexus indicates Door Side Airbag Sensor Malfunction.
Common causes: Common causes include Faulty Door Side Airbag Sensor (Left Side), Door Side Airbag Sensor (Left Side) harness is open or shorted, Door Side Airbag Sensor (Left Side) 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 1,258

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Feb 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1145 Lexus Description

The Door Side Airbag Sensor (Left Side) circuit consists of the airbag sensor assembly and Door Side Airbag Sensor (Left Side). The Diagnostic Trouble Code (DTC) B1145 is recorded when a malfunction is detected in the Door Side Airbag Sensor (Left Side) circuit.

OBDII Code B1145 Lexus - Door Side Airbag Sensor Malfunction - AutoCodes.com — B1145 Lexus Code - Door Side Airbag Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC B1145 Lexus?

Faulty Door Side Airbag Sensor (Left Side)
Door Side Airbag Sensor (Left Side) harness is open or shorted
Door Side Airbag Sensor (Left Side) circuit poor electrical connection
Faulty Airbag Sensor Assembly

How to Fix the DTC B1145 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 B1145 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 B1145 Lexus code?

Need more information on how to fix the B1145 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1145 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 B1145 Lexus Code

1. What are the common symptoms of OBDII code B1145 in a Lexus related to a door side airbag sensor malfunction?

The common symptoms include the airbag warning light illuminating on the dashboard and a notification indicating an issue with the door side airbag sensor.

2. What are some possible causes of the B1145 code in a Lexus, signaling a door side airbag sensor malfunction?

Possible causes can include a faulty door side airbag sensor, damaged wiring or connectors, or issues with the airbag control module.

3. How can I diagnose the B1145 code in a Lexus to confirm a door side airbag sensor malfunction?

Diagnosis typically involves using an OBDII scanner to read the code, visually inspecting the door side airbag sensor and related components, and conducting electrical tests to identify the root cause.

4. Are there any safety concerns associated with the B1145 code in a Lexus due to a door side airbag sensor malfunction?

Yes, a malfunctioning door side airbag sensor can affect the proper deployment of the airbag in the event of a side impact collision, potentially compromising occupant safety.

5. Can I continue driving my Lexus with the B1145 code indicating a door side airbag sensor malfunction?

It is not recommended to drive the vehicle with this code present, as the airbag system may not function correctly in the event of a collision, increasing the risk of injury to occupants.

6. How can I repair the B1145 code in a Lexus related to a door side airbag sensor malfunction?

Repair options may include replacing the faulty door side airbag sensor, repairing damaged wiring or connectors, and resetting the airbag system to clear the code.

7. Is it possible to reset the B1145 code in a Lexus after repairing the door side airbag sensor issue?

Yes, after addressing the root cause of the malfunction and making the necessary repairs, you can reset the airbag system with an OBDII scanner to clear the B1145 code.

8. Can a DIY enthusiast fix the B1145 code in a Lexus caused by a door side airbag sensor malfunction?

While some simple repairs like checking connections or replacing a sensor may be within reach of a DIY enthusiast, it is recommended to consult a professional for complex airbag system issues to ensure proper repair and safety.

9. How much does it cost to repair the B1145 code in a Lexus related to a door side airbag sensor malfunction?

The cost of repair can vary depending on the exact cause of the issue, the extent of the damage, and the labor rates of the service provider. It is advisable to obtain quotes from trusted automotive professionals.

10. Are there any recalls or service bulletins related to the B1145 code in Lexus vehicles for a door side airbag sensor malfunction?

It is advisable to check with Lexus dealerships or official sources to see if there are any recalls or service bulletins addressing the B1145 code specifically for door side airbag sensor malfunctions in Lexus vehicles.