AutoCodes – Toyota – B1622 Toyota

B1622 Toyota Code - Lost Communication With Side Airbag Sensor Right

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: B1622 Toyota indicates Lost Communication With Side Airbag Sensor Right.
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 1,531

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 B1622 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 B1622 Toyota - Lost Communication With Side Airbag Sensor Right - AutoCodes.com — B1622 Toyota Code - Lost Communication With Side Airbag Sensor Right

What does this mean?

What are the Possible Causes of the DTC B1622 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 B1622 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 B1622 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 B1622 Toyota code?

Need more information on how to fix the B1622 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1622 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 B1622 Toyota Code

1. What are the common symptoms of OBDII code B1622 Toyota?

The common symptoms of code B1622 include the airbag warning light illuminating on the dashboard and a potential loss of communication with the right side airbag sensor.

2. What does the OBDII code B1622 Toyota - Lost Communication With Side Airbag Sensor Right mean?

This code indicates a communication problem between the vehicle's onboard diagnostic system and the right side airbag sensor, which may affect the proper functioning of the airbag system.

3. What are the possible causes of OBDII code B1622 Toyota?

Possible causes of code B1622 include a faulty side airbag sensor on the right side, damaged wiring or connectors, a blown fuse, or a malfunction in the airbag control module.

4. How can I diagnose the issue related to code B1622 Toyota?

Diagnosing code B1622 typically involves using a diagnostic scan tool to retrieve the specific trouble codes, inspecting the wiring and connectors related to the right side airbag sensor, and testing the sensor itself for proper functionality.

5. Can I continue driving with OBDII code B1622 Toyota present?

It is not recommended to drive the vehicle with an active airbag system fault code like B1622, as the airbags may not deploy correctly in the event of an accident. It is best to address the issue promptly.

6. How can I repair OBDII code B1622 Toyota?

Repairing code B1622 usually involves fixing the underlying issue causing the communication loss with the right side airbag sensor, such as replacing a faulty sensor, repairing damaged wiring, or addressing any issues with the airbag control module.

7. Is it possible to reset OBDII code B1622 Toyota without fixing the underlying issue?

While you can clear the trouble code temporarily with a scan tool, it will likely reappear if the root cause of the communication problem with the right side airbag sensor is not addressed.

8. Are there any safety concerns associated with OBDII code B1622 Toyota?

Yes, there are safety concerns with code B1622, as it indicates a potential issue with the airbag system. It is essential to address this problem promptly to ensure the airbags function correctly in case of an accident.

9. Can a DIY enthusiast fix OBDII code B1622 Toyota at home?

Depending on the specific cause of the code, some DIY enthusiasts with the necessary tools and experience may be able to address the issue themselves by replacing a faulty sensor or repairing damaged wiring. However, for complex issues, professional assistance may be required.

10. How much does it cost to repair OBDII code B1622 Toyota?

The cost of repairing code B1622 can vary depending on the root cause of the issue, the cost of replacement parts, and labor charges. It is advisable to consult with a mechanic or dealership for an accurate estimate.