B124C
USB 2 Circuit
B124C is an OBD-II diagnostic trouble code meaning: USB 2 Circuit. Common causes: open or shorted wiring harness, damaged usb port. Estimated repair cost: $11–56.
Severity
✅ LowCan you drive?
Yes, but get it checked soon
Approx. repair cost
$11–56 (est.)
Symptoms
- USB port doesn't work
- Devices are not recognized when connected
- Error message on display
Causes
- Open or shorted wiring harness
- Damaged USB port
- Oxidized or damaged connector pins
- Control module malfunction
How to Fix
- Check the integrity of the wiring harness
- Inspect the USB port for damage
- Clean connector contacts
- Check the operation of the control module
- If necessary, replace the USB port or wiring harness
FAQ
What does the B124C code mean?
B124C is an OBD-II diagnostic trouble code that indicates: USB 2 Circuit
What causes a B124C error code?
The most common causes of B124C include: Open or shorted wiring harness; Damaged USB port; Oxidized or damaged connector pins; Control module malfunction.
How do I fix a B124C diagnostic trouble code?
To fix B124C: Check the integrity of the wiring harness. Inspect the USB port for damage. Clean connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B124C?
Yes, but get it checked soon
How much does it cost to fix B124C?
The estimated repair cost for B124C is $11–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat