Engine-CodesScion – B1248 Scion

B1248 Scion Code - AVC–LAN Communication Impossible

Quick Answer

The B1248 diagnostic trouble code (DTC) for Scion vehicles indicates that there is a communication issue within the AVC-LAN (Audio Visual, Communication Local Area Network) system. Common causes include Damaged wiring or connectors in the AVC-LAN system, Faulty module or component within the AVC-LAN network, Software glitches or programming errors. 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
B1248 Scion indicates AVC–LAN Communication Impossible.
Common causes
Common causes include Damaged wiring or connectors in the AVC-LAN system, Faulty module or component within the AVC-LAN network, Software glitches or programming errors.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1248 Scion Description

The B1248 diagnostic trouble code (DTC) for Scion vehicles indicates that there is a communication issue within the AVC-LAN (Audio Visual, Communication Local Area Network) system. This system is responsible for facilitating communication between various modules and components in the vehicle, such as the audio system, navigation system, and other multimedia devices. When this communication is disrupted or impossible, it can lead to a range of issues affecting the vehicle's performance and functionality.

OBDII Code B1248 Scion - AVC–LAN Communication Impossible
B1248 Scion Code - AVC–LAN Communication Impossible

Common Causes of B1248 Scion

  1. Damaged wiring or connectors in the AVC-LAN system
  2. Faulty module or component within the AVC-LAN network
  3. Software glitches or programming errors
  4. Water damage or corrosion affecting the communication system
  5. Electrical issues such as a weak battery or alternator affecting system voltage

Symptoms of B1248 Scion

  1. Loss of audio output from the speakers
  2. Navigation system malfunctions or freezes
  3. Bluetooth connectivity issues
  4. Inoperable infotainment system
  5. Display screen showing error messages related to communication failure

How to Fix B1248 Scion

  1. Begin by conducting a thorough inspection of the wiring, connectors, and components within the AVC-LAN system to identify any visible damage or loose connections.
  2. Use a diagnostic scan tool to retrieve specific fault codes and pinpoint the exact location of the communication issue within the system.
  3. Test the functionality of individual modules and components within the AVC-LAN network to identify any faulty units that may need replacement.
  4. Address any software-related issues by performing a system reset or reprogramming the affected modules to restore proper communication.
  5. Once the root cause of the communication problem is identified, repair or replace the damaged wiring, connectors, or components as necessary to restore proper functionality.

Cost to Fix B1248 Scion

The cost of repairing the AVC-LAN communication issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair can range from $200 to $500 or more. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model. Additionally, factors such as the location of the repair shop, the complexity of the repair, and the availability of parts can also impact the overall cost of addressing the B1248 DTC.

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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 B1248 Scion Code

1. What are the common symptoms of OBDII code B1248 in a Scion related to AVC-LAN communication?

- Common symptoms include issues with the audio system, navigation system, or other multimedia components not functioning properly or displaying error messages.

2. What can cause the AVC-LAN communication error with code B1248 in a Scion?

- Possible causes include a faulty AVC-LAN communication module, damaged wiring harnesses, loose connections, or issues with other related components.

3. How can I diagnose the AVC-LAN communication problem causing OBDII code B1248 in my Scion?

- Diagnosis usually involves checking the connections, inspecting wiring for damage, testing the communication module, and using a scan tool to retrieve specific error codes.

4. Is it safe to continue driving my Scion with OBDII code B1248 related to AVC-LAN communication issues?

- It is generally safe to drive the vehicle, but you may experience issues with multimedia functions. It is recommended to address the problem to ensure proper functionality.

5. Can I fix the OBDII code B1248 in my Scion related to AVC-LAN communication myself?

- Depending on your skill level, you may be able to address the issue by checking connections, repairing wiring, or replacing faulty components. However, professional assistance may be necessary for more complex repairs.

6. Are there any common repair tips for resolving OBDII code B1248 Scion AVC-LAN communication errors?

- Ensure all connections are secure, inspect wiring for damage, reset the multimedia system, and consider updating software if applicable to troubleshoot and resolve the issue.

7. Will resetting the ECU clear OBDII code B1248 Scion AVC-LAN communication error?

- Resetting the ECU may temporarily clear the code, but it is recommended to diagnose and address the root cause of the communication problem to prevent the code from reoccurring.

8. Does the OBDII code B1248 in a Scion affect the vehicle's overall performance?

- The code itself may not impact the vehicle's performance, but it can cause issues with multimedia systems and lead to inconvenience for the driver and passengers.

9. Can extreme weather conditions contribute to triggering OBDII code B1248 in a Scion related to AVC-LAN communication?

- Extreme temperatures or moisture can potentially affect electrical connections and components, leading to communication errors that trigger the B1248 code in the AVC-LAN system.

10. Is it necessary to visit a dealership for OBDII code B1248 Scion AVC-LAN communication repairs?

- While visiting a dealership can provide specialized expertise, independent repair shops and skilled DIY enthusiasts may also be able to diagnose and repair the issue effectively.

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