AutoCodes – Toyota – B1623 Toyota

B1623 Toyota 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 Toyota 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 5,602

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

What does this mean?

What are the Possible Causes of the DTC B1623 Toyota?

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 Toyota?

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 Toyota 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 Toyota code?

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

Need Help with the Code?

Get the B1623 Toyota 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 Toyota Code

1. What are common symptoms of OBDII code B1623 Toyota - Side Airbag Sensor Assembly Right Initialization Incomplete?

The common symptoms include the airbag warning light illuminated on the dashboard and a potential message indicating an issue with the side airbag system.

2. What can cause the OBDII code B1623 Toyota to trigger?

The code B1623 can be triggered due to a faulty side airbag sensor assembly on the right side, improper sensor initialization, or damaged wiring/connectors related to the sensor.

3. How can I diagnose the OBDII code B1623 Toyota?

Diagnosing this code typically involves using an OBDII scanner to retrieve the specific code, followed by inspecting the right side airbag sensor assembly, its wiring, and connectors for any visible damage or loose connections.

4. Can driving with the OBDII code B1623 Toyota trigger any safety concerns?

Driving with the B1623 code may pose a safety risk as the right side airbag sensor assembly may not function properly in the event of a collision, potentially leading to the airbag not deploying as intended.

5. What are the repair options for OBDII code B1623 Toyota?

Repair options include checking and repairing any damaged wiring or connectors, replacing the faulty right side airbag sensor assembly, and ensuring proper initialization of the sensor.

6. Is it safe to reset the OBDII code B1623 Toyota without addressing the underlying issue?

It is not recommended to reset the code without addressing the root cause, as this may lead to the potential safety risk of the right side airbag not deploying correctly in an accident.

7. Can a DIY enthusiast fix the OBDII code B1623 Toyota at home?

While some basic inspections and checks can be done at home, repairing or replacing the right side airbag sensor assembly usually requires specialized tools and expertise, so it is advisable to seek professional help.

8. How much can I expect to pay for repairing the OBDII code B1623 Toyota at a dealership?

The cost of repairing the B1623 code at a dealership can vary depending on the extent of the damage and the specific components that need to be replaced, but it may range from a few hundred to over a thousand dollars.

9. Are there any recalls or technical service bulletins related to the OBDII code B1623 Toyota?

It's recommended to check with Toyota or the National Highway Traffic Safety Administration (NHTSA) for any recalls or technical service bulletins related to the B1623 code to see if the issue is covered under a warranty or special campaign.

10. How can I prevent the OBDII code B1623 Toyota from recurring in the future?

Regular maintenance checks, prompt addressing of any airbag warning lights, and ensuring proper handling of the vehicle to avoid accidents can help prevent the recurrence of the B1623 code related to the side airbag sensor assembly initialization issue.