Engine-CodesLexus – B1628 Lexus

B1628 Lexus Code - Side Airbag Sensor Assembly Left Initialization Incomplete

Quick Answer

The B1628 code for Lexus vehicles indicates that the side airbag sensor assembly on the left side of the vehicle has not been properly initialized. Common causes include Faulty side airbag sensor assembly, Wiring or connection issues between the sensor and the airbag system, Software glitch preventing proper initialization of the sensor. 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
B1628 Lexus indicates Side Airbag Sensor Assembly Left Initialization Incomplete.
Common causes
Common causes include Faulty side airbag sensor assembly, Wiring or connection issues between the sensor and the airbag system, Software glitch preventing proper initialization of the sensor.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B1628 Lexus Description

The B1628 code for Lexus vehicles indicates that the side airbag sensor assembly on the left side of the vehicle has not been properly initialized. This means that the sensor is not communicating with the vehicle's airbag system, potentially leading to a malfunction in the deployment of the side airbag in the event of a collision. This issue can compromise the safety of the vehicle occupants as the airbag may not deploy as intended.

OBDII Code B1628 Lexus - Side Airbag Sensor Assembly Left Initialization Incomplete
B1628 Lexus Code - Side Airbag Sensor Assembly Left Initialization Incomplete

Common Causes of B1628 Lexus

  1. Faulty side airbag sensor assembly.
  2. Wiring or connection issues between the sensor and the airbag system.
  3. Software glitch preventing proper initialization of the sensor.
  4. Impact or damage to the sensor from a previous collision.
  5. Corrosion or moisture affecting the sensor's functionality.

Symptoms of B1628 Lexus

  1. Airbag warning light illuminated on the dashboard.
  2. Side airbag system failure message displayed on the instrument panel.
  3. Inability to activate or deactivate the passenger side airbag.
  4. Complete failure of the side airbag system during a collision.

How to Fix B1628 Lexus

  1. Begin by diagnosing the specific cause of the initialization failure using a diagnostic scanner.
  2. Inspect the wiring and connections for any damage or corrosion and repair or replace as needed.
  3. Check the sensor assembly for any physical damage and replace if necessary.
  4. Reset the airbag system and initialize the sensor according to manufacturer's guidelines.
  5. Perform a system test to ensure proper communication and functionality of the side airbag sensor assembly.

Cost to Fix B1628 Lexus

The cost of repairing the B1628 code on a Lexus vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that diagnostic time and labor rates can fluctuate, so it's recommended to get a quote from a reputable auto repair shop before proceeding with the repair.

Need more information about the B1628 Lexus code?

Need more information on how to fix the B1628 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1628 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 B1628 Lexus Code

1. What are the common symptoms of OBDII code B1628 related to the Side Airbag Sensor Assembly Left Initialization Incomplete in a Lexus?

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

2. What could be the possible causes of OBDII code B1628 in a Lexus indicating Side Airbag Sensor Assembly Left Initialization Incomplete?

- The code B1628 can be triggered by issues such as a faulty side airbag sensor assembly, wiring problems, or a malfunction in the airbag control module.

3. How can I diagnose the OBDII code B1628 pertaining to Side Airbag Sensor Assembly Left Initialization Incomplete in my Lexus?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code, checking the wiring connections, and inspecting the side airbag sensor assembly for any visible damage.

4. Is it safe to drive my Lexus with the OBDII code B1628 for Side Airbag Sensor Assembly Left Initialization Incomplete?

- It is not recommended to drive the vehicle with an active airbag fault code, as it may compromise the effectiveness of the airbag system in the event of an accident.

5. Can I reset the OBDII code B1628 related to Side Airbag Sensor Assembly Left Initialization Incomplete in my Lexus on my own?

- Resetting the code may temporarily turn off the warning light, but it is crucial to address the underlying issue causing the fault code to prevent potential safety risks.

6. What are some repair tips for resolving OBDII code B1628 associated with Side Airbag Sensor Assembly Left Initialization Incomplete in a Lexus?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty side airbag sensor assembly, or recalibrating the airbag system as per manufacturer's specifications.

7. How much does it typically cost to repair OBDII code B1628 for Side Airbag Sensor Assembly Left Initialization Incomplete in a Lexus?

- The cost of repair can vary depending on the root cause of the issue, parts needed, and labor costs. It's recommended to consult with a professional mechanic for an accurate estimate.

8. Can I attempt to fix OBDII code B1628 related to Side Airbag Sensor Assembly Left Initialization Incomplete in my Lexus myself?

- While some basic troubleshooting steps can be taken, dealing with airbag systems requires specialized knowledge and tools. It's safer to have the issue diagnosed and repaired by a qualified technician.

9. Are there any recalls or service bulletins related to OBDII code B1628 in Lexus vehicles for Side Airbag Sensor Assembly Left Initialization Incomplete?

- It's advisable to check with a Lexus dealership or visit the manufacturer's website to see if there are any relevant recalls or service bulletins addressing this specific fault code.

10. How can I prevent OBDII code B1628 from occurring again in my Lexus after repairing the Side Airbag Sensor Assembly Left Initialization Incomplete issue?

- Regular maintenance, careful handling of the airbag system components, and addressing any warning lights promptly can help prevent the recurrence of OBDII code B1628 in the future.

Discuss the causes and fixes for B1628 Lexus OBDII Code

Code B1628 Lexus comments

No comments found for this page.