AutoCodes – Lexus – B1676 Lexus

B1676 Lexus Code - Lost Communication With Rear Floor Airbag Sensor RH

Quick Answer

The Rear Floor Airbag Sensor circuit consists of the Center Airbag Sensor and Rear Floor Airbag Sensor. Common causes include Faulty Rear Floor Airbag Sensor, Rear Floor Airbag Sensor harness is open or shorted, Rear Floor Airbag Sensor 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: B1676 Lexus indicates Lost Communication With Rear Floor Airbag Sensor RH.
Common causes: Common causes include Faulty Rear Floor Airbag Sensor, Rear Floor Airbag Sensor harness is open or shorted, Rear Floor Airbag Sensor 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 828

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 Jun 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1676 Lexus Description

The Rear Floor Airbag Sensor circuit consists of the Center Airbag Sensor and Rear Floor Airbag Sensor. The Rear Floor Airbag Sensor detects impacts to the vehicle and sends signals to the Center Airbag Sensor to determine if the airbag should be deployed. The Diagnostic Trouble Code (DTC) B1676 is stored when a malfunction is detected in the Rear Floor Airbag Sensor circuit.

OBDII Code B1676 Lexus - Lost Communication With Rear Floor Airbag Sensor RH - AutoCodes.com — B1676 Lexus Code - Lost Communication With Rear Floor Airbag Sensor RH

What does this mean?

What are the Possible Causes of the DTC B1676 Lexus?

Faulty Rear Floor Airbag Sensor
Rear Floor Airbag Sensor harness is open or shorted
Rear Floor Airbag Sensor circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1676 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 B1676 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 B1676 Lexus code?

Need more information on how to fix the B1676 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1676 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 B1676 Lexus Code

1. What are the common symptoms of OBDII code B1676 in a Lexus related to lost communication with the rear floor airbag sensor RH?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the rear floor airbag system.

2. What are possible causes of OBDII code B1676 in a Lexus?

- The code B1676 is usually triggered by a communication failure between the vehicle's onboard computer and the rear floor airbag sensor RH, which can be caused by wiring issues, sensor malfunctions, or a faulty control module.

3. How can I diagnose the reason behind OBDII code B1676 in my Lexus?

- To diagnose the issue, you can start by checking the wiring connections to the rear floor airbag sensor RH, inspecting the sensor itself for any physical damage, and using a diagnostic scanner to read the specific error codes stored in the system.

4. Is it safe to drive my Lexus with OBDII code B1676 active?

- It is not recommended to drive the vehicle with the airbag warning light on, as it indicates a potential issue with the airbag system, which could compromise your safety in case of an accident.

5. How can I reset OBDII code B1676 in my Lexus after fixing the underlying issue?

- After resolving the communication issue with the rear floor airbag sensor RH, you can reset the OBDII code B1676 using a diagnostic scanner or by disconnecting the car's battery for a few minutes to clear the error code.

6. Can I repair OBDII code B1676 in my Lexus by myself, or do I need to take it to a professional mechanic?

- Depending on your automotive repair skills and knowledge, you may be able to fix the communication issue causing code B1676 yourself by checking the wiring, sensor, and connections. However, if you are unsure, it's best to consult a professional mechanic.

7. Are there any specific tips for preventing OBDII code B1676 from recurring in my Lexus?

- To prevent the code from reoccurring, make sure to inspect and maintain the rear floor airbag sensor RH regularly, check the wiring connections for any signs of damage, and address any issues promptly to avoid communication failures.

8. How critical is it to address OBDII code B1676 in a timely manner for the safety of occupants in a Lexus?

- It is crucial to address OBDII code B1676 promptly as it indicates a potential problem with the airbag system, which plays a vital role in passenger safety during a collision. Ignoring the issue could put occupants at risk.

9. Can extreme weather conditions or environmental factors trigger OBDII code B1676 in a Lexus?

- While extreme weather conditions or environmental factors may not directly trigger code B1676, they can contribute to wiring degradation or sensor malfunctions over time, leading to communication failures with the rear floor airbag sensor RH.

10. Is there a specific recall or service bulletin related to OBDII code B1676 in Lexus vehicles?

- It's advisable to check with your local Lexus dealership or visit the manufacturer's website to see if there are any recalls or service bulletins related to OBDII code B1676 specifically for your Lexus model.