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Engine-Codes – Generic – B1642

B1642 Code - Lost Communication With Side Satellite Sensor Bus Right

Quick Answer

The B1642 diagnostic trouble code indicates that the vehicle has lost communication with the side satellite sensor bus on the right side. Common causes include Damaged wiring or connectors, Faulty side satellite sensor, Malfunctioning 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
B1642 indicates Lost Communication With Side Satellite Sensor Bus Right.
Common causes
Common causes include Damaged wiring or connectors, Faulty side satellite sensor, Malfunctioning 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code B1642 Description

The B1642 diagnostic trouble code indicates that the vehicle has lost communication with the side satellite sensor bus on the right side. This sensor is a crucial component of the vehicle's safety system, as it helps detect and respond to potential collisions on the right side of the vehicle. When communication with this sensor is lost, it can lead to a variety of safety issues and impact the overall performance of the vehicle.

OBDII Code B1642 - Lost Communication With Side Satellite Sensor Bus Right
B1642 Code - Lost Communication With Side Satellite Sensor Bus Right

Common Causes of B1642

  1. Damaged wiring or connectors
  2. Faulty side satellite sensor
  3. Malfunctioning control module
  4. Communication error within the system

Symptoms of B1642

  1. Dashboard warning lights related to the safety system
  2. Loss of functionality in right-side safety features
  3. Limited performance in collision avoidance systems
  4. Vehicle entering "limp mode" to protect occupants

How to Fix B1642

  1. Perform a diagnostic scan to retrieve the specific error codes and pinpoint the issue
  2. Inspect the wiring and connectors for any damage or corrosion
  3. Test the side satellite sensor for proper function or replace if necessary
  4. Check the control module for any faults and reprogram or replace as needed
  5. Clear the error codes and test the vehicle to ensure proper communication with the side satellite sensor bus on the right side

Cost to Fix B1642

The typical repair costs for addressing the B1642 code can vary depending on the specific issue and the extent of the repairs needed. On average, the cost of parts and labor for this repair can range from $200 to $500. However, it is important to note that the actual cost may be higher or lower based on the location, vehicle make and model, and the rates of the auto repair shop. It is recommended to consult with a professional mechanic for an accurate estimate based on the specific circumstances of the vehicle.

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Code B1642 Information for Specific Makes

  • B1642 Lexus — Lost Communication With Side Satellite Sensor Bus Right
  • B1642 Scion — Lost Communication With Side Satellite Sensor Bus Right
  • B1642 Toyota — Lost Communication With Side Satellite Sensor Bus 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 B1642 Code

1. What are the common symptoms of OBDII code B1642?

- Common symptoms include the airbag warning light illuminating on the dashboard, loss of communication with the side satellite sensor on the right side, and potential issues with the airbag system.

2. What are the possible causes of OBDII code B1642?

- Possible causes of this code include a faulty side satellite sensor on the right side, damaged wiring or connections, or a malfunction in the airbag control module.

3. How can I diagnose the issue related to OBDII code B1642?

- Diagnosing the issue involves using a diagnostic scanner to read the code, checking the connections and wiring related to the side satellite sensor on the right side, and conducting a thorough inspection of the airbag system components.

4. Can I still drive my vehicle with OBDII code B1642?

- It is not recommended to drive the vehicle with an unresolved airbag system issue, as it may compromise the safety of the occupants in case of a collision. It is best to address the problem promptly.

5. How can I repair OBDII code B1642?

- Repairing this code typically involves fixing or replacing the faulty side satellite sensor on the right side, repairing any damaged wiring or connections, and resetting the airbag system using a diagnostic scanner.

6. Is it safe to reset the OBDII code B1642 myself?

- While you can attempt to reset the code using a diagnostic scanner, it is crucial to first identify and address the underlying issue causing the code to ensure the proper functioning of the airbag system.

7. Can a mechanic help me fix OBDII code B1642?

- Yes, a qualified mechanic with experience in diagnosing and repairing airbag system issues can help you fix OBDII code B1642 by identifying the root cause and performing the necessary repairs.

8. Are there any safety precautions I should take when dealing with OBDII code B1642?

- When working on the airbag system related to this code, it is essential to disconnect the vehicle's battery and wait for a few minutes to discharge any stored energy to prevent accidental deployment of the airbags.

9. How do I prevent OBDII code B1642 from occurring again in the future?

- To prevent this code from reoccurring, it is essential to perform regular maintenance checks on the airbag system components, ensure proper wiring connections, and address any issues promptly to avoid further damage.

10. Can OBDII code B1642 be a false alarm?

- While it is possible for a diagnostic scanner to display false codes, it is crucial to investigate the issue further to rule out any actual problems with the side satellite sensor or the airbag system.

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