AutoCodesBuick – B124C Buick

B124C Buick Code - USB 2 Circuit

Quick Answer

The infotainment system has a USB port and an Auxiliary Audio Input Jack located in the center console. Common causes include Faulty USB Port, USB Port harness is open or shorted, USB Port circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
B124C Buick indicates USB 2 Circuit.
Common causes
Common causes include Faulty USB Port, USB Port harness is open or shorted, USB Port circuit poor electrical connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 1,099
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B124C Buick Description

The infotainment system has a USB port and an Auxiliary Audio Input Jack located in the center console. The receptacle assembly receives fused battery voltage and ground from the harness to power the internal hub device as well as providing additional amperage to power USB devices.
The internal hub device interfaces directly with the human-machine interface control module via a standard USB cable. A Mini type of USB connector is used to connect the human-machine interface control module and the USB receptacle. Standard USB male-to-female connections are typically used for connecting USB cables together where an in-line connection is required. An in-line cable connection is typically found between the console and the I/P harness.
The USB port allows connectivity to the infotainment system from portable media players or a USB storage device (memory stick/ flash drive). When a device is connected to the USB port, the system detects the device and switches to USB as the audio source. Once connected, the device can be controlled by the radio controls.
Not all portable media player devices or file types are compatible. Refer to the owner’s manual for information on USB devices, control, and operation.
OBDII Code B124C Buick - USB 2 Circuit - AutoCodes.com
B124C Buick Code - USB 2 Circuit

What are the Possible Causes of the DTC B124C Buick?

  • Faulty USB Port
  • USB Port harness is open or shorted
  • USB Port circuit poor electrical connection
  • Faulty Human Machine Interface Control Module (If equipped)
  • Faulty Radio

How to Fix the DTC B124C Buick?

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 B124C Buick 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 B124C Buick code?

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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 B124C Buick Code

1. What are the common symptoms of OBDII code B124C in a Buick related to the USB 2 Circuit?

The common symptoms include issues with the USB port functionality, such as the inability to charge devices or connect to the vehicle's entertainment system.

2. What are the possible causes of OBDII code B124C in a Buick?

Potential causes of this code may include a faulty USB port, damaged wiring or connectors in the USB circuit, or a malfunctioning USB control module.

3. How can I diagnose the OBDII code B124C in my Buick related to the USB 2 Circuit?

Diagnosis typically involves inspecting the USB port for physical damage, checking the wiring and connectors for any issues, and using a diagnostic scan tool to identify the specific fault.

4. Can I repair the OBDII code B124C in my Buick myself?

Depending on your level of experience and access to tools, you may be able to repair the issue yourself by replacing a faulty USB port or fixing damaged wiring. However, if you are unsure, it's recommended to seek professional help.

5. Is it safe to continue driving my Buick with the OBDII code B124C related to the USB 2 Circuit?

While the vehicle may still be operable with this code, it's best to address the issue promptly to prevent any further damage to the USB system or related components.

6. How much does it typically cost to repair OBDII code B124C in a Buick?

The cost of repairs can vary depending on the specific cause of the code and whether you choose to do the repairs yourself or take your vehicle to a mechanic. It's advisable to get a few quotes for an accurate estimate.

7. Can a faulty USB 2 Circuit in my Buick cause other issues besides triggering the OBDII code B124C?

Yes, a malfunctioning USB circuit can potentially cause other electrical problems in the vehicle, impact the entertainment system's functionality, or lead to issues with charging devices.

8. Are there any preventive measures I can take to avoid encountering the OBDII code B124C in my Buick?

To help prevent this code from occurring, you can avoid using excessive force when plugging in devices to the USB port, regularly inspect the port for any damage, and address any electrical issues promptly.

9. Will resetting the OBDII code B124C in my Buick make the issue go away permanently?

Simply resetting the code without addressing the underlying problem will not fix the issue permanently. It's crucial to diagnose and repair the root cause of the code to prevent it from reoccurring.

10. How long does it typically take to repair the OBDII code B124C related to the USB 2 Circuit in a Buick?

The repair time can vary based on the specific cause of the code and the complexity of the repair. It could range from a quick fix to a more involved repair that may take a few hours to complete.

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