AutoCodes – Toyota – B1647 2018 Toyota RAV4

B1647 2018 Toyota RAV4 Code - Lost Communication With Side Satellite Sensor Bus Left

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), Side Airbag Sensor Left harness is open or shorted. 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: B1647 2018 Toyota RAV4 indicates Lost Communication With Side Satellite Sensor Bus Left.
Common causes: Common causes include Faulty Side Airbag Sensor Left (LH), Faulty Rear Airbag Sensor Left (LH), Side Airbag Sensor Left harness is open or shorted.
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 423

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 Oct 10, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1647 2018 Toyota RAV4 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 B1647 2018 Toyota RAV4 - Lost Communication With Side Satellite Sensor Bus Left - AutoCodes.com — B1647 2018 Toyota RAV4 Code - Lost Communication With Side Satellite Sensor Bus Left

What does this mean?

What are the Possible Causes of the DTC B1647 2018 Toyota RAV4?

Faulty Side Airbag Sensor Left (LH)
Faulty Rear Airbag Sensor Left (LH)
Side Airbag Sensor Left harness is open or shorted
Side Airbag Sensor Left circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1647 2018 Toyota RAV4?

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 B1647 2018 Toyota RAV4 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 B1647 2018 Toyota RAV4 code?

Need more information on how to fix the B1647 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1647 2018 Toyota RAV4 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 B1647 2018 Toyota RAV4 Code

1. What are common symptoms of OBDII code B1647 in a 2018 Toyota RAV4?

- Common symptoms may include malfunctioning airbag or safety systems, warning lights on the dashboard, and issues with the vehicle's stability control.

2. What does the OBDII code B1647 "Lost Communication With Side Satellite Sensor Bus Left" mean for a 2018 Toyota RAV4?

- This code indicates a communication error between the vehicle's onboard computer and the left side satellite sensor bus, which can affect the proper functioning of safety systems.

3. What are possible causes of OBDII code B1647 in a 2018 Toyota RAV4?

- Potential causes include wiring issues, a faulty side satellite sensor, a malfunctioning control module, or a problem with the communication network within the vehicle.

4. How can I diagnose the OBDII code B1647 in my 2018 Toyota RAV4?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific error codes, checking the wiring connections, and performing a thorough inspection of the side satellite sensor and related components.

5. Can I drive my 2018 Toyota RAV4 with the OBDII code B1647 present?

- It is not recommended to drive the vehicle with this code present, as it may indicate underlying safety system issues that could compromise the vehicle's safety in the event of an accident.

6. How can I repair OBDII code B1647 in my 2018 Toyota RAV4?

- Repairing this code may involve addressing any wiring faults, replacing the side satellite sensor if necessary, resetting the control module, and ensuring proper communication between components.

7. Is it safe to reset the OBDII code B1647 in my 2018 Toyota RAV4 without fixing the underlying issue?

- It is not recommended to reset the code without addressing the root cause, as doing so may temporarily clear the warning lights but will not resolve the potential safety system malfunction.

8. How much does it cost to repair OBDII code B1647 in a 2018 Toyota RAV4?

- The cost of repairing this code can vary depending on the specific issue, but it may involve expenses for diagnostic services, parts replacement, and labor charges from a professional mechanic.

9. Can a DIY enthusiast fix OBDII code B1647 in a 2018 Toyota RAV4?

- While some enthusiasts may have the skills to diagnose and repair this code, it is recommended to consult a qualified mechanic or technician for proper diagnosis and repair to ensure the safety systems function correctly.

10. Will OBDII code B1647 affect the overall performance of my 2018 Toyota RAV4?

- While this code may not directly impact the vehicle's performance, it can affect the operation of safety systems like airbags and stability control, compromising the overall safety of the vehicle.