B124C 2018 GMC Sierra Code - USB 2 Circuit
Quick Answer
The B124C diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the USB 2 circuit. Common causes include Damaged wiring leading to the USB 2 port, Faulty USB port hardware, Defective control module responsible for USB functionality. 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
- B124C 2018 GMC Sierra indicates USB 2 Circuit.
- Common causes
- Common causes include Damaged wiring leading to the USB 2 port, Faulty USB port hardware, Defective control module responsible for USB functionality.
- 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.
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Code B124C 2018 GMC Sierra Description
The B124C diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the USB 2 circuit. This code indicates that there is a malfunction in the circuit that controls the USB 2 port in the vehicle. The USB 2 port is commonly used for connecting devices such as smartphones, tablets, or USB drives to the vehicle's infotainment system for media playback or charging.
Common Causes of B124C 2018 GMC Sierra
- Damaged wiring leading to the USB 2 port.
- Faulty USB port hardware.
- Defective control module responsible for USB functionality.
- Software glitch affecting the USB 2 circuit.
- Water damage or corrosion in the USB 2 circuit components.
Symptoms of B124C 2018 GMC Sierra
- USB 2 port not charging devices.
- Inability to play media through the USB connection.
- Error messages related to the USB 2 port on the infotainment system.
- Devices not being recognized when connected to the USB 2 port.
How to Fix B124C 2018 GMC Sierra
- Begin by inspecting the wiring leading to the USB 2 port for any signs of damage or wear. Repair or replace any damaged wiring.
- Check the USB port itself for any physical damage or loose connections. Replace the USB port if necessary.
- Test the control module responsible for the USB functionality to determine if it is functioning correctly. Replace the control module if it is found to be defective.
- Update the software that controls the USB circuit in the vehicle to the latest version. This may resolve any software-related issues causing the malfunction.
- Clear the DTC from the vehicle's system using a diagnostic tool after completing the repairs to ensure the issue has been resolved.
Cost to Fix B124C 2018 GMC Sierra
The typical repair costs for addressing the B124C code related to the USB 2 circuit in a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new USB port or control module, along with labor for diagnosis and repair, can range from $150 to $500. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and the extent of the repair needed can also impact the overall cost. For a more accurate estimate, it is recommended to consult with a local auto repair shop.
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Frequently Asked Questions about B124C 2018 GMC Sierra Code
1. What does OBDII code B124C mean on a 2018 GMC Sierra?
Code B124C refers to a fault in the USB 2 circuit, indicating an issue with the wiring, connection, or hardware related to the second USB port.
2. What are the symptoms of code B124C in a 2018 GMC Sierra?
Common symptoms include a non-functional USB 2 port, inability to charge devices, or failure to recognize connected devices.
3. What causes code B124C in a 2018 GMC Sierra?
Potential causes include damaged wiring, a faulty USB hub, loose or corroded connections, or a defective USB port module.
4. Can code B124C affect other vehicle systems in a 2018 GMC Sierra?
Typically, this code only affects the USB 2 functionality and does not impact other critical vehicle systems.
5. How do you diagnose code B124C in a 2018 GMC Sierra?
Diagnosis involves inspecting the USB 2 circuit wiring, checking for loose or corroded connections, and testing the USB hub or port for faults.
6. Is code B124C easy to fix on a 2018 GMC Sierra?
Yes, in most cases, repairing a loose connection or replacing a faulty USB hub resolves the issue.
7. Can I clear code B124C without fixing the issue?
Clearing the code without addressing the underlying problem may cause it to reappear when the system detects the fault again.
8. How much does it cost to repair code B124C on a 2018 GMC Sierra?
Repair costs can vary but typically range from $50 to $150, depending on whether the USB port or hub needs replacement.
9. Can I still use my vehicle normally with code B124C present?
Yes, the vehicle remains drivable, but the USB 2 port functionality will be compromised.
10. What tools are needed to troubleshoot code B124C in a 2018 GMC Sierra?
You’ll need an OBDII scanner, a multimeter for electrical testing, and basic tools to inspect and repair wiring or connections.
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