AutoCodes – Lexus – B1632 Lexus

B1632 Lexus Code - Lost Communication With Rear Airbag Sensor Right

Quick Answer

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. Common causes include Faulty Rear Airbag Sensor Right (RH), Rear Airbag Sensor Right harness is open or shorted, Rear Airbag Sensor Right circuit poor electrical connection. 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 Lexus indicates Lost Communication With Rear Airbag Sensor Right.
Common causes: Common causes include Faulty Rear Airbag Sensor Right (RH), Rear Airbag Sensor Right harness is open or shorted, Rear Airbag Sensor Right circuit poor electrical connection.
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 1,344

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 Oct 10, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1632 Lexus Description

The Side Airbag Sensor Left (LH) or Rear Airbag Sensor Right (RH) consists of the Diagnostic Circuit, the Lateral Deceleration Sensor, etc. If the Center Airbag Sensor receives signals from the Lateral Deceleration Sensor, it determines whether the Supplemental Restraint System (SRS) should be activated. The Diagnostic Trouble Code (DTC) B1632 is stored when a malfunction is detected in the Rear Airbag Sensor Right circuit.

OBDII Code B1632 Lexus - Lost Communication With Rear Airbag Sensor Right - AutoCodes.com — B1632 Lexus Code - Lost Communication With Rear Airbag Sensor Right

What does this mean?

What are the Possible Causes of the DTC B1632 Lexus?

Faulty Rear Airbag Sensor Right (RH)
Rear Airbag Sensor Right harness is open or shorted
Rear Airbag Sensor Right circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1632 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 B1632 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 B1632 Lexus code?

Need more information on how to fix the B1632 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1632 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 B1632 Lexus Code

1. What are the common symptoms of OBDII code B1632 in a Lexus related to the right rear airbag sensor communication issue?

Symptoms may include the airbag warning light illuminating on the dashboard, potential non-deployment of the right rear airbag in a collision, and diagnostic trouble codes stored in the vehicle's system.

2. What could be causing the OBDII code B1632 "Lost Communication With Rear Airbag Sensor Right" in a Lexus?

Possible causes include a faulty rear airbag sensor, damaged wiring or connectors leading to the sensor, a malfunctioning airbag control module, or a communication network issue within the vehicle.

3. How can I diagnose the OBDII code B1632 in my Lexus to pinpoint the issue with the right rear airbag sensor communication?

A thorough diagnostic scan using an OBDII scanner capable of reading manufacturer-specific codes can help identify the specific fault code, allowing for further inspection of the rear airbag sensor, wiring, connectors, and related components.

4. Are there any safety concerns associated with OBDII code B1632 in a Lexus indicating lost communication with the right rear airbag sensor?

Yes, there are safety concerns as the malfunction could compromise the proper functioning of the right rear airbag system, potentially affecting occupant protection in the event of a collision.

5. Can I continue driving my Lexus with the OBDII code B1632 related to the right rear airbag sensor communication issue?

It is not recommended to drive the vehicle with unresolved airbag system faults. Prompt diagnosis and repair are crucial to ensure the safety features, including the right rear airbag, function correctly when needed.

6. What are some repair tips for addressing OBDII code B1632 in a Lexus due to lost communication with the right rear airbag sensor?

Inspecting the sensor and its connections for physical damage, checking wiring harness integrity, and resetting the airbag system after repairs are common steps to resolve the communication issue and clear the fault code.

7. Can a DIY enthusiast fix the OBDII code B1632 "Lost Communication With Rear Airbag Sensor Right" in a Lexus?

While some basic troubleshooting steps like checking connections can be done by DIY enthusiasts, complex repairs involving airbag system components are best left to trained professionals due to safety concerns and specialized knowledge required.

8. How much does it typically cost to repair OBDII code B1632 in a Lexus related to the right rear airbag sensor communication issue?

The repair costs can vary based on the exact cause of the fault, parts needed, labor rates, and whether the repair is done at a dealership or an independent repair shop. It is advisable to obtain quotes from multiple sources.

9. Is it necessary to clear the OBDII code B1632 from the vehicle's system after fixing the issue with the right rear airbag sensor communication?

Yes, it is essential to clear the fault code from the system using an OBDII scanner after resolving the communication problem with the right rear airbag sensor. This step ensures the system recognizes the repair and resets the warning indicators.

10. How can proper maintenance help prevent OBDII code B1632 related to lost communication with the right rear airbag sensor in a Lexus?

Regular inspections, timely repairs of any wiring issues, and following the manufacturer's recommended service schedule for the airbag system can help prevent communication faults like B1632, ensuring the system functions as intended.