B1632 Toyota Code - Lost Communication With Rear Airbag Sensor Right

Quick Answer

The B1632 diagnostic trouble code for Toyota vehicles indicates that there is a communication issue with the rear airbag sensor located on the right side of the vehicle. Common causes include Damaged wiring or connectors leading to the rear airbag sensor, Faulty rear airbag sensor on the right side, Issues with the electronic control unit (ECU) managing communication with 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

B1632 Toyota indicates Lost Communication With Rear Airbag Sensor Right.

Common causes

Common causes include Damaged wiring or connectors leading to the rear airbag sensor, Faulty rear airbag sensor on the right side, Issues with the electronic control unit (ECU) managing communication with 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.

• Description
• Common Causes
• Symptoms
• How To Fix
• Cost to Fix
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Common Causes of B1632 Toyota

Symptoms of B1632 Toyota

How to Fix B1632 Toyota

Cost to Fix B1632 Toyota

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Information for Specific Toyota Models

• B1632 2013 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right
• B1632 2014 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right
• B1632 2015 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right
• B1632 2016 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right
• B1632 2017 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right
• B1632 2018 Toyota RAV4 — Lost Communication With Rear Airbag Sensor Right

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 B1632 Toyota Code

1. What are the common symptoms of OBDII code B1632 Toyota (Lost Communication With Rear Airbag Sensor Right)?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential loss of communication with the rear airbag sensor on the right side of the vehicle.

2. What are some possible causes of OBDII code B1632 Toyota?

- Possible causes include faulty wiring connections, a damaged rear airbag sensor on the right side, or a malfunctioning airbag control module.

3. How can I diagnose the issue related to code B1632 Toyota?

- Diagnosing the issue typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring connections, and testing the rear airbag sensor for proper function.

4. Is it safe to drive with OBDII code B1632 Toyota triggered?

- It is not recommended to drive with the airbag warning light on, as it indicates a potential issue with the airbag system that may affect its operation in the event of a collision.

5. Can I reset the OBDII code B1632 Toyota without fixing the underlying issue?

- Resetting the code without addressing the root cause will likely result in the code reappearing once the system detects the ongoing communication issue with the rear airbag sensor.

6. How can I repair OBDII code B1632 Toyota myself?

- Repairing this code may involve checking and repairing any damaged wiring, replacing the rear airbag sensor if necessary, and resetting the system to clear the fault code.

7. Are there any safety precautions to consider when working on the airbag system related to code B1632 Toyota?

- It is crucial to disconnect the vehicle's battery and wait for a specified time before working on the airbag system to prevent accidental deployment.

8. How much does it typically cost to repair OBDII code B1632 Toyota at a dealership or mechanic?

- The cost of repair can vary depending on the specific issue, but it may involve diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

9. Can OBDII code B1632 Toyota be triggered by other issues unrelated to the rear airbag sensor?

- While the code specifically relates to lost communication with the rear airbag sensor on the right side, other underlying electrical or airbag system faults could potentially trigger a similar code.

10. Is it necessary to have the airbag system inspected by a professional if OBDII code B1632 Toyota appears?

- It is recommended to have the airbag system inspected by a qualified technician to accurately diagnose and repair the issue, ensuring the safety and proper functionality of the airbag system.