AutoCodes – Lexus – B1628 Lexus

B1628 Lexus Code - Side Airbag Sensor Assembly Left Initialization Incomplete

Quick Answer

The Side Collision Sensor Left (LH) circuit (to determine deployment of the Front Seat Side Airbag Assembly LH and Curtain Shield Airbag Assembly LH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor LH and Rear Airbag Sensor LH. Common causes include Faulty Side Airbag Sensor Left (LH), Faulty Rear Airbag Sensor Left (LH), 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: B1628 Lexus indicates Side Airbag Sensor Assembly Left Initialization Incomplete.
Common causes: Common causes include Faulty Side Airbag Sensor Left (LH), Faulty Rear Airbag Sensor Left (LH), 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 3,573

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 B1628 Lexus Description

The Side Collision Sensor Left (LH) circuit (to determine deployment of the Front Seat Side Airbag Assembly LH and Curtain Shield Airbag Assembly LH) is composed of the Center Airbag Sensor Assembly, Side Airbag Sensor LH and Rear Airbag Sensor LH. The Side Airbag Sensor LH and Rear Airbag Sensor LH 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 in the Side Collision Sensor LH circuit (to determine deployment of the Front Seat Side Airbag Assembly LH and Curtain Shield Airbag Assembly LH).

OBDII Code B1628 Lexus - Side Airbag Sensor Assembly Left Initialization Incomplete - AutoCodes.com — B1628 Lexus Code - Side Airbag Sensor Assembly Left Initialization Incomplete

What does this mean?

What are the Possible Causes of the DTC B1628 Lexus?

Faulty Side Airbag Sensor Left (LH)
Faulty Rear Airbag Sensor Left (LH)
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 B1628 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 B1628 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 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.