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B399B Buick Code - Rearview Camera Supply Circuit

- Code Popularity: 416 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B399B Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Rearview Camera
  • Rearview Camera harness is open or shorted
  • Rearview Camera circuit poor electrical connection
  • Faulty Video Processing Control Module
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How to Fix the DTC B399B Buick?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

B399B 01 Rearview Camera Supply Circuit Short to Battery
B399B 02 Rearview Camera Supply Circuit Short to Ground

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B399B Buick code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code B399B Buick 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 Rearview camera 6V reference circuit is shorted to voltage or is shorted to ground.

OBDII Code B399B Buick - Rearview Camera Supply Circuit - AutoCodes.com
B399B Buick Code - Rearview Camera Supply Circuit

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Code B399B Buick comments

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