AutoCodes – Toyota – B1643 Toyota

B1643 Toyota Code - Side Satellite Sensor Bus 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: B1643 Toyota indicates Side Satellite Sensor Bus 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 13,188

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 B1643 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 B1643 Toyota - Side Satellite Sensor Bus Right Initialization Incomplete - AutoCodes.com — B1643 Toyota Code - Side Satellite Sensor Bus Right Initialization Incomplete

What does this mean?

What are the Possible Causes of the DTC B1643 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 B1643 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 B1643 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.

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Need more information on how to fix the B1643 Toyota code? Get Access to Factory Service Manuals

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Get the B1643 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 B1643 Toyota Code

1. What are the common symptoms of OBDII code B1643 in a Toyota related to the Side Satellite Sensor Bus Right Initialization Incomplete?

The common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the airbag system's functionality.

2. What are the possible causes of OBDII code B1643 in a Toyota indicating Side Satellite Sensor Bus Right Initialization Incomplete?

The code B1643 can be triggered by a faulty side satellite sensor, wiring issues, or a problem with the airbag control module.

3. How can I diagnose the OBDII code B1643 in a Toyota indicating Side Satellite Sensor Bus Right Initialization Incomplete?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault codes, inspecting the side satellite sensor and its wiring, and checking the airbag control module for any issues.

4. Can I continue driving my Toyota with the OBDII code B1643 related to Side Satellite Sensor Bus Right Initialization Incomplete?

It is not recommended to continue driving the vehicle with this code present, as it indicates a potential problem with the airbag system, which is a crucial safety feature.

5. Is it possible to reset the OBDII code B1643 in a Toyota indicating Side Satellite Sensor Bus Right Initialization Incomplete?

Resetting the code may temporarily turn off the warning light, but it is essential to diagnose and address the underlying issue to ensure the airbag system's proper function.

6. How much does it typically cost to repair OBDII code B1643 related to Side Satellite Sensor Bus Right Initialization Incomplete in a Toyota?

The repair costs can vary depending on the specific cause of the issue, but it may involve replacing the side satellite sensor, repairing wiring, or addressing problems with the airbag control module.

7. Can I repair OBDII code B1643 in a Toyota indicating Side Satellite Sensor Bus Right Initialization Incomplete myself?

While some enthusiasts may have the skills to tackle this repair, it is recommended to have a professional technician diagnose and repair the issue to ensure it is done correctly and safely.

8. What is the Side Satellite Sensor Bus Right Initialization Incomplete error in a Toyota?

The error code B1643 indicates that the initialization process of the side satellite sensor on the right side of the vehicle is incomplete, potentially affecting the proper operation of the airbag system.

9. How urgent is it to address the OBDII code B1643 related to Side Satellite Sensor Bus Right Initialization Incomplete in a Toyota?

It is crucial to address this issue promptly, as it involves the airbag system, which is a critical safety component in the vehicle. Ignoring the problem could lead to the airbags not deploying correctly in the event of an accident.

10. Are there any preventive measures to avoid OBDII code B1643 related to Side Satellite Sensor Bus Right Initialization Incomplete in a Toyota?

Regular maintenance and inspections of the airbag system, including the side satellite sensors, can help prevent issues like code B1643. Promptly addressing any warning lights or abnormal behavior can also help avoid more severe problems.