B399B GMC Code - Rearview Camera Supply Circuit
Quick Answer
The Video Processing Control Module performs fault detection on itself and the cameras attached to it. Common causes include Faulty Rearview Camera, Rearview Camera harness is open or shorted, Rearview Camera circuit poor electrical connection. 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
- B399B GMC indicates Rearview Camera Supply Circuit.
- Common causes
- Common causes include Faulty Rearview Camera, Rearview Camera harness is open or shorted, Rearview Camera circuit poor electrical connection.
- 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.
Code B399B GMC Description
What are the Possible Causes of the DTC B399B GMC?
- Faulty Rearview Camera
- Rearview Camera harness is open or shorted
- Rearview Camera circuit poor electrical connection
- Faulty Video Processing Control Module
How to Fix the DTC B399B GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B399B 02 Rearview Camera Supply Circuit Short to Ground
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B399B GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B399B GMC Code
1. What are common symptoms of OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- Common symptoms include a malfunctioning rearview camera, a blank or distorted display, and a warning message on the dashboard related to the rear camera system.
2. What causes the OBDII code B399B GMC (Rearview Camera Supply Circuit) to trigger?
- The code can be triggered by issues such as a faulty rearview camera, damaged wiring or connectors in the camera circuit, or a malfunction in the camera power supply.
3. How can I diagnose the OBDII code B399B GMC related to the rearview camera supply circuit?
- Diagnose the code by visually inspecting the rearview camera and its wiring, checking for loose or damaged connections, and using a diagnostic scanner to gather more information about the issue.
4. What are some repair tips for fixing the OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- Repair tips may include repairing or replacing damaged wiring, connectors, or the rearview camera itself, resetting the camera system, and clearing the trouble codes with a diagnostic tool.
5. Can a DIY enthusiast fix the OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- While some basic inspections and repairs can be done by DIY enthusiasts, complex issues with the rearview camera system may require professional diagnosis and repair to ensure proper functioning.
6. Is it safe to drive with the OBDII code B399B GMC (Rearview Camera Supply Circuit) unresolved?
- It is generally safe to drive with this code, but be aware that the rearview camera system may not function properly, leading to reduced visibility while reversing or parking.
7. How much does it cost to repair the OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services from a qualified mechanic.
8. Can weather conditions affect the triggering of OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially damage the rearview camera system components or affect its performance, triggering the code.
9. How often does the OBDII code B399B GMC (Rearview Camera Supply Circuit) occur in vehicles?
- The occurrence of this code can vary among vehicles, but it is not uncommon, especially in vehicles equipped with rearview camera systems that may experience wiring or component issues over time.
10. Are there any recalls related to the OBDII code B399B GMC (Rearview Camera Supply Circuit)?
- It's recommended to check with the manufacturer or authorized dealers for any recalls related to the rearview camera supply circuit issue, as some vehicles may have been subject to recall campaigns addressing this problem.
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