AutoCodes – GMC – B399A GMC

B399A GMC Code - Frontview 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 Frontview Camera, Frontview Camera harness is open or shorted, Frontview 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: B399A GMC indicates Frontview Camera Supply Circuit.
Common causes: Common causes include Faulty Frontview Camera, Frontview Camera harness is open or shorted, Frontview 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.

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Code Popularity 1,170

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B399A GMC Description

The Video Processing Control Module performs fault detection on itself and the cameras attached to it. The Diagnostic Trouble Code (DTC) sets when the frontview camera 6V reference circuit is shorted to voltage or is shorted to ground.

OBDII Code B399A GMC - Frontview Camera Supply Circuit - AutoCodes.com — B399A GMC Code - Frontview Camera Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B399A GMC?

Faulty Frontview Camera
Frontview Camera harness is open or shorted
Frontview Camera circuit poor electrical connection
Faulty Video Processing Control Module

How to Fix the DTC B399A 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.

What does this mean?

Code Tech Notes

B399A 01 Frontview Camera Supply Circuit Short to Battery
B399A 02 Frontview Camera Supply Circuit Short to Ground

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B399A 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B399A GMC Code

1. What are the common symptoms of OBDII code B399A GMC (Frontview Camera Supply Circuit)?

- The common symptoms include a malfunctioning frontview camera, loss of camera display on the dashboard, and warning lights related to the camera system.

2. What are the possible causes of OBDII code B399A GMC?

- Possible causes of this code may include a faulty frontview camera, damaged wiring or connectors in the camera circuit, or a malfunctioning camera power supply module.

3. How can I diagnose the Frontview Camera Supply Circuit issue related to code B399A GMC?

- Diagnose by visually inspecting the camera, checking the wiring and connectors for any damage, and testing the camera power supply module for proper functionality.

4. What are some repair tips for resolving OBDII code B399A GMC?

- Repair tips include repairing or replacing damaged wiring and connectors, recalibrating or replacing the frontview camera, and ensuring the camera power supply module is functioning correctly.

5. Can I fix OBDII code B399A GMC (Frontview Camera Supply Circuit) issue at home?

- Depending on your automotive repair skills and access to tools, you may be able to address this issue at home by following repair guides and diagnostic procedures for the frontview camera system.

6. Is it safe to drive with OBDII code B399A GMC active?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to restore the proper functionality of the frontview camera system.

7. How much does it cost to repair OBDII code B399A GMC?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

8. Can resetting the OBDII system clear the B399A GMC code?

- Resetting the OBDII system may temporarily clear the code, but it is important to diagnose and address the underlying issue causing the Frontview Camera Supply Circuit problem.

9. Will OBDII code B399A GMC cause my vehicle to fail an emissions test?

- This code is not directly related to emissions, so it should not cause your vehicle to fail an emissions test. However, it is still recommended to address the issue for proper vehicle functionality.

10. How can I prevent OBDII code B399A GMC from occurring in the future?

- To prevent this code, perform regular maintenance checks on the frontview camera system, avoid physical damage to the camera and wiring, and address any issues promptly to avoid further complications.