B399B
Rearview Camera Supply Circuit
B399B is an OBD-II diagnostic trouble code meaning: Rearview Camera Supply Circuit. Common causes: open or short circuit in the power supply, rear view camera malfunction. Estimated repair cost: $56–167.
Symptoms
- Rear view camera does not work
- The camera image disappears or becomes distorted
- Error message on display
Causes
- Open or short circuit in the power supply
- Rear view camera malfunction
- Problems with the control unit
- Corrosion or oxidation of contacts
- Wiring harness damage
How to Fix
- Check the integrity of the wiring harness
- Check the voltage in the power circuit
- Inspect connectors and contacts for corrosion
- Check camera functionality
- If necessary, replace the camera or wiring harness
Related codes
Error B399B by Vehicle Brand
FAQ
What does the B399B code mean?
B399B is an OBD-II diagnostic trouble code that indicates: Rearview Camera Supply Circuit
What causes a B399B error code?
The most common causes of B399B include: Open or short circuit in the power supply; Rear view camera malfunction; Problems with the control unit; Corrosion or oxidation of contacts.
How do I fix a B399B diagnostic trouble code?
To fix B399B: Check the integrity of the wiring harness. Check the voltage in the power circuit. Inspect connectors and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B399B?
Limited driving only, diagnose soon
How much does it cost to fix B399B?
The estimated repair cost for B399B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat