B124B 2016 GMC Sierra Code - USB 1 Circuit
Quick Answer
The B124B diagnostic trouble code (DTC) for the USB 1 Circuit in a 2016 GMC Sierra indicates a problem with the vehicle's USB 1 circuit. Common causes include Faulty USB port, Damaged or corroded wiring connected to the USB circuit, Loose connections in the USB circuit. 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 2016 GMC Sierra indicates USB 1 Circuit.
- Common causes
- Common causes include Faulty USB port, Damaged or corroded wiring connected to the USB circuit, Loose connections in the USB circuit.
- 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 B124B 2016 GMC Sierra Description
The B124B diagnostic trouble code (DTC) for the USB 1 Circuit in a 2016 GMC Sierra indicates a problem with the vehicle's USB 1 circuit. This code is typically associated with issues related to the USB port or the wiring connected to it. The USB port in modern vehicles is used for connecting external devices such as smartphones, USB drives, or other media devices to the vehicle's infotainment system. When this circuit malfunctions, it can lead to the inability to connect external devices, play media, or charge devices through the USB port.
Common Causes of B124B 2016 GMC Sierra
- Faulty USB port
- Damaged or corroded wiring connected to the USB circuit
- Loose connections in the USB circuit
- Issues with the vehicle's infotainment system software
- Water or moisture damage affecting the USB circuit
Symptoms of B124B 2016 GMC Sierra
- Inability to connect external devices to the infotainment system
- Media playback issues when using the USB port
- Charging problems with devices connected to the USB port
- Error messages related to the USB connection on the infotainment screen
How to Fix B124B 2016 GMC Sierra
- Inspect the USB port and wiring for any visible damage or corrosion.
- Test the continuity of the wiring connected to the USB circuit to identify any breaks or shorts.
- Check for loose connections and ensure all connections are secure.
- Reset the vehicle's infotainment system to see if the issue resolves.
- Replace the USB port or repair any damaged wiring if necessary.
Cost to Fix B124B 2016 GMC Sierra
The cost of repairing the USB 1 Circuit issue in a 2016 GMC Sierra can vary depending on the extent of the problem and the specific repairs needed. In general, replacing a faulty USB port or repairing damaged wiring may cost between $100 to $300, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the specific circumstances.
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Frequently Asked Questions about B124B 2016 GMC Sierra Code
1. What does the OBDII code B124B mean on a 2016 GMC Sierra?
The B124B code indicates an issue with the USB 1 circuit, typically involving a malfunction in the USB port or its associated wiring.
2. What are the symptoms of the B124B code in a 2016 GMC Sierra?
Common symptoms include the USB port not recognizing devices, slow charging, or devices disconnecting intermittently.
3. What causes the B124B code to appear?
Causes may include a damaged USB port, faulty wiring, a blown fuse, or a defective infotainment system module.
4. How do I diagnose the B124B code on my GMC Sierra?
Inspect the USB port for physical damage, check the wiring for continuity, and verify the fuse for the USB circuit is intact.
5. Can I still use my truck with the B124B code active?
Yes, the truck will still operate, but the USB port functionality may be impaired or non-functional.
6. How do I fix the B124B code on my 2016 GMC Sierra?
Repairs may include replacing the USB port, repairing damaged wiring, or reprogramming or replacing the infotainment system module.
7. Is the B124B code covered under warranty?
It depends on your vehicle’s warranty terms and mileage, but it may be covered if the warranty is still active.
8. Can a loose connection cause the B124B code?
Yes, a loose or corroded USB cable connection can trigger the B124B code.
9. What tools are needed to troubleshoot the B124B code?
You’ll need a multimeter to test wiring continuity, a scan tool to clear codes, and basic tools to access the USB port and wiring.
10. Do I need to visit a dealership to fix the B124B code?
Not necessarily; a qualified mechanic or someone with electrical troubleshooting experience can often repair the issue. However, dealership service may be required for module reprogramming.
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