AutoCodes – Lexus – B1623 Lexus

B1623 Lexus Code - Side Airbag Sensor Assembly Right Initialization Incomplete

Quick Answer

The Side Collision Sensor Right (RH) circuit (to determine deployment of the Front Seat Side Airbag Assembly RH and Curtain Shield Airbag Assembly RH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor RH and Rear Airbag Sensor RH. Common causes include Faulty Side Airbag Sensor Right (RH), Faulty Rear Airbag Sensor Right (RH), Faulty Center Airbag Sensor Assembly. 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: B1623 Lexus indicates Side Airbag Sensor Assembly Right Initialization Incomplete.
Common causes: Common causes include Faulty Side Airbag Sensor Right (RH), Faulty Rear Airbag Sensor Right (RH), Faulty Center Airbag Sensor Assembly.
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 1,166

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 May 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1623 Lexus Description

The Side Collision Sensor Right (RH) circuit (to determine deployment of the Front Seat Side Airbag Assembly RH and Curtain Shield Airbag Assembly RH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor RH and Rear Airbag Sensor RH. The Side Airbag Sensor RH and Rear Airbag Sensor RH detect impacts to the vehicle and send signals to the Center Airbag Sensor Assembly to determine if the airbag should be deployed. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected for the Side Collision RH circuit (to determine deployment of the Front Seat Side Airbag Assembly RH and Curtain Shield Airbag Assembly RH).

OBDII Code B1623 Lexus - Side Airbag Sensor Assembly Right Initialization Incomplete - AutoCodes.com — B1623 Lexus Code - Side Airbag Sensor Assembly Right Initialization Incomplete

What does this mean?

What are the Possible Causes of the DTC B1623 Lexus?

Faulty Side Airbag Sensor Right (RH)
Faulty Rear Airbag Sensor Right (RH)
Faulty Center Airbag Sensor Assembly
Center Airbag Sensor Assembly harness is open or shorted
Center Airbag Sensor Assembly circuit poor electrical connection

How to Fix the DTC B1623 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 B1623 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 B1623 Lexus code?

Need more information on how to fix the B1623 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1623 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 B1623 Lexus Code

1. What are the common symptoms of OBDII code B1623 in a Lexus related to the Side Airbag Sensor Assembly Right Initialization Incomplete?

The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the right side airbag system.

2. What could cause the OBDII code B1623 in a Lexus indicating Side Airbag Sensor Assembly Right Initialization Incomplete?

This code is typically triggered by a fault in the right side airbag sensor assembly, such as a wiring issue, sensor malfunction, or improper initialization.

3. How can I diagnose the OBDII code B1623 in my Lexus for the Side Airbag Sensor Assembly Right Initialization Incomplete?

Diagnosing this code usually involves using an OBDII scanner to retrieve the specific error code, checking the wiring and connections of the right side airbag sensor assembly, and potentially performing a sensor initialization process.

4. Is it safe to drive my Lexus with the OBDII code B1623 for Side Airbag Sensor Assembly Right Initialization Incomplete?

It is not recommended to drive the vehicle with this code active, as it indicates a potential issue with the right side airbag system, which could affect its proper functioning in the event of a collision.

5. Can I reset the OBDII code B1623 in my Lexus related to Side Airbag Sensor Assembly Right Initialization Incomplete?

Resetting the code may temporarily turn off the warning light, but it is crucial to diagnose and repair the underlying issue causing the code to ensure the airbag system's proper operation.

6. Are there any DIY repair tips for fixing the OBDII code B1623 in a Lexus due to Side Airbag Sensor Assembly Right Initialization Incomplete?

DIY repair for this code may involve checking and securing the wiring connections of the right side airbag sensor assembly, ensuring proper sensor initialization, or seeking professional assistance for a thorough diagnosis and repair.

7. How much does it typically cost to repair the OBDII code B1623 in a Lexus related to Side Airbag Sensor Assembly Right Initialization Incomplete?

The repair cost can vary depending on the root cause of the issue, but it may involve replacing faulty sensors, repairing wiring, or reinitializing the sensor assembly, which can range from a few hundred to a thousand dollars.

8. Can a faulty battery or power supply cause the OBDII code B1623 in a Lexus for Side Airbag Sensor Assembly Right Initialization Incomplete?

Yes, a weak or faulty battery can sometimes cause communication errors and trigger this code, so it's essential to ensure the vehicle's electrical system is in good condition.

9. Will disconnecting the battery reset the OBDII code B1623 in a Lexus indicating Side Airbag Sensor Assembly Right Initialization Incomplete?

Disconnecting the battery might clear the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the fault during self-checks.

10. How urgent is it to address the OBDII code B1623 in a Lexus for Side Airbag Sensor Assembly Right Initialization Incomplete?

It is crucial to address this code promptly to ensure the proper functioning of the right side airbag system in case of an accident. Ignoring the issue can compromise the safety of the vehicle occupants.