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C168B Lexus Code - AVC-LAN Communication Malfunction

Quick Answer

The C168B diagnostic trouble code for Lexus vehicles indicates an AVC-LAN communication malfunction. Common causes include Damaged or faulty wiring, Loose connections, Malfunctioning audio or video component. 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
C168B Lexus indicates AVC-LAN Communication Malfunction.
Common causes
Common causes include Damaged or faulty wiring, Loose connections, Malfunctioning audio or video component.
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 10, 2024
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Code C168B Lexus Description

The C168B diagnostic trouble code for Lexus vehicles indicates an AVC-LAN communication malfunction. AVC-LAN stands for Audio and Video Communication Local Area Network, which is a system that allows various components of the vehicle's audio and video systems to communicate with each other. When this system malfunctions, it can lead to issues with the vehicle's audio and video components, as well as other electrical systems that rely on communication over the AVC-LAN network.

OBDII Code C168B Lexus - AVC-LAN Communication Malfunction
C168B Lexus Code - AVC-LAN Communication Malfunction

Common Causes of C168B Lexus

  1. Damaged or faulty wiring
  2. Loose connections
  3. Malfunctioning audio or video component
  4. Problem with the AVC-LAN communication module

Symptoms of C168B Lexus

  1. Loss of sound from the audio system
  2. Malfunctioning navigation or entertainment screens
  3. Intermittent electrical issues
  4. Complete loss of audio and video functionality

How to Fix C168B Lexus

  1. Diagnose the issue using a diagnostic scanner to retrieve the specific fault codes related to the AVC-LAN communication malfunction.
  2. Inspect the wiring and connections related to the AVC-LAN system for any visible damage or loose connections.
  3. Test the audio and video components to identify any malfunctioning parts that may be causing the communication issue.
  4. If necessary, replace any damaged wiring, repair loose connections, or replace malfunctioning components to restore proper communication over the AVC-LAN network.
  5. Clear the fault codes and perform a final test to ensure that the issue has been resolved and that the audio and video systems are functioning correctly.

Cost to Fix C168B Lexus

The typical repair costs for addressing an AVC-LAN communication malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair could range from $200 to $500 or more. It's important to note that the diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Therefore, it's advisable to check local rates for a more precise estimate before proceeding with the repair.

What does this mean?

Tech Notes for C168B Lexus

This Diagnostic Trouble Code (DTC) may be stored due to the battery condition or changes in the power supply waveform when starting the engine, even though there is no problem with the Audio Visual Communication-Local Area Network (AVC-LAN) communication system.

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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 C168B Lexus Code

1. What are the common symptoms of OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

The common symptoms include intermittent or total loss of audio system function, malfunctioning navigation system, and issues with the rear entertainment system.

2. What could be the possible causes of OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

Possible causes include damaged wiring, faulty connectors, a malfunctioning audio head unit, or issues with the AVC-LAN communication network.

3. How can I diagnose the OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

Diagnosis typically involves checking the wiring and connectors for damage, testing the audio head unit functionality, and inspecting the AVC-LAN communication network for faults.

4. Can I repair the OBDII code C168B in a Lexus related to AVC-LAN communication malfunction myself?

Depending on your experience and knowledge, you may be able to address the issue by checking and repairing damaged wiring or connectors. However, complex problems with the audio system or communication network may require professional assistance.

5. Are there any tips for preventing OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

Regularly inspecting the wiring and connectors for any signs of wear or damage, ensuring proper installation of aftermarket audio components, and avoiding water damage to the audio system can help prevent this issue.

6. How serious is OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

While the symptoms can be inconvenient, this code typically does not affect the overall drivability or safety of the vehicle. However, it may impact the functionality of certain entertainment and navigation features.

7. Is it safe to continue driving my Lexus with OBDII code C168B related to AVC-LAN communication malfunction?

It is generally safe to drive the vehicle with this code, but you may experience issues with the audio or navigation system. It is recommended to address the problem promptly to restore full functionality.

8. How much does it cost to repair OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

The cost of repair can vary depending on the specific cause of the issue. Simple fixes like repairing wiring may be relatively inexpensive, while replacing the audio head unit or addressing network problems could be more costly.

9. Can resetting the OBDII code C168B in a Lexus related to AVC-LAN communication malfunction temporarily fix the issue?

Resetting the code may temporarily clear the error message, but if the underlying problem is not addressed, the code is likely to reappear. It is important to diagnose and fix the root cause of the communication malfunction.

10. How long does it take to repair OBDII code C168B in a Lexus related to AVC-LAN communication malfunction?

The repair time can vary depending on the complexity of the issue. Simple fixes like repairing wiring may take a few hours, while more involved repairs could require leaving the vehicle with a professional technician for a day or longer.

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