Engine-Codes.com
Engine-Codes – GMC – B124B 2017 GMC Sierra

B124B 2017 GMC Sierra Code - USB 1 Circuit

Quick Answer

The B124B diagnostic trouble code (DTC) for the USB 1 Circuit in a 2017 GMC Sierra indicates a problem with the communication circuit for the USB port in the vehicle. Common causes include Damaged wiring in the USB circuit, Faulty USB port, Defective USB 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
B124B 2017 GMC Sierra indicates USB 1 Circuit.
Common causes
Common causes include Damaged wiring in the USB circuit, Faulty USB port, Defective USB 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 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B124B 2017 GMC Sierra Description

The B124B diagnostic trouble code (DTC) for the USB 1 Circuit in a 2017 GMC Sierra indicates a problem with the communication circuit for the USB port in the vehicle. The USB port is a crucial component for connecting external devices such as smartphones, tablets, or USB drives to the vehicle's infotainment system. When this circuit malfunctions, it can lead to issues with device connectivity, media playback, and other functions that rely on the USB port.

OBDII Code B124B 2017 GMC Sierra - USB 1 Circuit
B124B 2017 GMC Sierra Code - USB 1 Circuit

Common Causes of B124B 2017 GMC Sierra

  1. Damaged wiring in the USB circuit
  2. Faulty USB port
  3. Defective USB module
  4. Software glitch in the vehicle's infotainment system
  5. Water or moisture damage to the USB components

Symptoms of B124B 2017 GMC Sierra

  1. USB port not recognizing connected devices
  2. Inability to play media from USB devices
  3. Intermittent connectivity issues with USB devices
  4. Error messages related to USB connectivity on the infotainment system

How to Fix B124B 2017 GMC Sierra

  1. Inspect the wiring harness for any visible damage or loose connections.
  2. Test the USB port for proper functionality and replace if necessary.
  3. Check the USB module for faults and replace if found to be defective.
  4. Update the vehicle's software to the latest version to address any software-related issues.
  5. Ensure that all connections are secure and properly reassemble the components after repair.

Cost to Fix B124B 2017 GMC Sierra

The typical repair costs for addressing the B124B code related to the USB 1 Circuit in a 2017 GMC Sierra can vary depending on the specific cause of the issue. On average, the repair may range from $100 to $300 for parts and labor. However, it is important to note that diagnosis time and labor rates at auto repair shops can fluctuate based on various factors. It is advisable to consult with a local auto repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle.

Need more information about the B124B 2017 GMC Sierra code?

Need more information on how to fix the B124B 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B124B 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 B124B 2017 GMC Sierra Code

1. What does the OBDII code B124B mean on a 2017 GMC Sierra?

The B124B code indicates a problem with the USB 1 Circuit, which involves a fault in the USB system's electrical components or connections.

2. What are common symptoms of code B124B in a 2017 GMC Sierra?

Symptoms may include the USB port not recognizing devices, intermittent USB functionality, or no power to the USB port.

3. What causes the B124B code to appear on a GMC Sierra?

Common causes include a damaged USB port, faulty wiring or connectors, or a malfunctioning infotainment system.

4. Can a blown fuse cause the B124B code in a 2017 GMC Sierra?

Yes, a blown fuse related to the USB circuit can trigger this code, as it disrupts the power supply to the USB system.

5. How do you diagnose the B124B code on a 2017 GMC Sierra?

Diagnosis involves inspecting the USB port, checking for loose or damaged wiring, verifying fuse integrity, and possibly using a scan tool to check related modules.

6. Can a software issue cause the B124B code in a GMC Sierra?

Yes, a glitch or outdated software in the infotainment system may lead to USB circuit errors and trigger the code.

7. How can the B124B code be fixed on a 2017 GMC Sierra?

Repairs may include replacing a faulty USB port, repairing damaged wiring, resetting or updating the infotainment system, or replacing a blown fuse.

8. Is it safe to drive with the B124B code on a GMC Sierra?

Yes, it’s generally safe to drive, but the USB functionality may be impaired until the issue is resolved.

9. How much does it typically cost to fix the B124B code on a 2017 GMC Sierra?

Repair costs can vary, but fixing the issue may range from $50 for a simple fuse replacement to $300 or more if the infotainment system or wiring needs repair.

10. Can I clear the B124B code without fixing the issue?

Clearing the code with a scan tool is possible, but the code will likely return if the underlying issue isn’t resolved.

Discuss the causes and fixes for B124B 2017 GMC Sierra OBDII Code

Submit a New Comment

Code B124B 2017 GMC Sierra comments

No comments found for this page.