B1647 Lexus Code - Lost Communication With Side Satellite Sensor Bus Left
Quick Answer
The B1647 diagnostic trouble code for Lexus vehicles indicates that there is a communication failure with the side satellite sensor bus on the left side of the vehicle. Common causes include Damaged wiring or connectors leading to the side satellite sensor, Faulty side satellite sensor, Malfunctioning airbag control module. 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 Lexus indicates Lost Communication With Side Satellite Sensor Bus Left.
- Common causes
- Common causes include Damaged wiring or connectors leading to the side satellite sensor, Faulty side satellite sensor, Malfunctioning airbag control module.
- 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 B1647 Lexus Description
The B1647 diagnostic trouble code for Lexus vehicles indicates that there is a communication failure with the side satellite sensor bus on the left side of the vehicle. The side satellite sensors are a crucial part of the vehicle's safety system, as they are responsible for detecting impacts and deploying the side airbags in the event of a collision. When communication with the side satellite sensor bus is lost, it can lead to a malfunction in the airbag system, potentially compromising the vehicle's occupant protection in the event of a side impact.
Common Causes of B1647 Lexus
- Damaged wiring or connectors leading to the side satellite sensor.
- Faulty side satellite sensor.
- Malfunctioning airbag control module.
- Communication error within the vehicle's network.
- Corrosion or water damage affecting the side satellite sensor system.
Symptoms of B1647 Lexus
- Airbag warning light illuminated on the dashboard.
- Side airbags not deploying in a collision.
- Loss of communication with other safety systems in the vehicle.
- Diagnostic trouble code B1647 stored in the vehicle's computer system.
How to Fix B1647 Lexus
- Begin by conducting a thorough visual inspection of the wiring and connectors leading to the side satellite sensor on the left side of the vehicle.
- Test the side satellite sensor for proper functionality using a diagnostic tool.
- Check the airbag control module for any faults or errors that may be causing the communication failure.
- Clear the diagnostic trouble code from the vehicle's computer system after completing the repair.
- Conduct a test drive to ensure that the side satellite sensor bus on the left side is communicating correctly and that the airbag system is functioning as intended.
Cost to Fix B1647 Lexus
The typical repair costs for addressing a lost communication issue with the side satellite sensor bus on the left side of a Lexus vehicle can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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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.
Frequently Asked Questions about B1647 Lexus Code
1. What are the common symptoms of OBDII code B1647 Lexus "Lost Communication With Side Satellite Sensor Bus Left"?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the vehicle's airbag system.
2. What are the possible causes of OBDII code B1647 in a Lexus?
- The code B1647 typically indicates a communication error with the side satellite sensor bus on the left side, which could be caused by a faulty sensor, wiring issues, or a problem with the airbag control module.
3. How serious is the OBDII code B1647 in a Lexus?
- The B1647 code is related to the airbag system, so it is important to address this issue promptly to ensure that the airbags function properly in the event of an accident.
4. Can I continue driving my Lexus with the OBDII code B1647 present?
- It is not recommended to continue driving the vehicle with the B1647 code active, as it may compromise the effectiveness of the airbag system in case of a collision.
5. How can I diagnose and repair OBDII code B1647 in my Lexus?
- Diagnosing and repairing the B1647 code typically involves checking the wiring harness, connectors, and the side satellite sensor itself for any faults or damage. Resetting the code after addressing the issue is also necessary.
6. Is it safe to reset the OBDII code B1647 in my Lexus without fixing the underlying issue?
- It is not recommended to reset the B1647 code without fixing the underlying problem, as it could pose a safety risk by potentially disabling the airbag system.
7. Can a DIY enthusiast fix the OBDII code B1647 in a Lexus?
- While some DIY enthusiasts may be able to diagnose and repair the B1647 code themselves, dealing with the airbag system can be complex and dangerous. It is recommended to seek professional help for this issue.
8. How much does it typically cost to repair OBDII code B1647 in a Lexus?
- The cost of repairing the B1647 code can vary depending on the specific cause of the issue. It may involve replacing a faulty sensor, repairing wiring, or addressing problems with the airbag control module.
9. Are there any preventive measures to avoid encountering OBDII code B1647 in a Lexus?
- Regular maintenance and inspection of the airbag system, including checking for loose connections and damaged wiring, can help prevent issues like the B1647 code from occurring.
10. Will fixing the OBDII code B1647 in my Lexus require specialized tools or equipment?
- Repairing the B1647 code may require specialized tools for diagnosing the airbag system, such as an OBDII scanner capable of reading airbag fault codes, as well as basic hand tools for inspecting and repairing wiring connections.
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