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Engine-Codes – Generic – B2047

B2047 Code - Right Rear Stop Lamp Circuit Open

Quick Answer

The B2047 diagnostic trouble code indicates that there is an open circuit in the right rear stop lamp circuit of the vehicle. Common causes include Damaged or corroded wiring harness, Faulty stop lamp bulb, Malfunctioning brake light switch. 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
B2047 indicates Right Rear Stop Lamp Circuit Open.
Common causes
Common causes include Damaged or corroded wiring harness, Faulty stop lamp bulb, Malfunctioning brake light switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code B2047 Description

The B2047 diagnostic trouble code indicates that there is an open circuit in the right rear stop lamp circuit of the vehicle. This means that there is a break or discontinuity in the electrical connection that controls the right rear stop lamp, preventing it from functioning properly. The stop lamp is a crucial safety feature that alerts other drivers when you are braking, so it is essential to address this issue promptly.

OBDII Code B2047 - Right Rear Stop Lamp Circuit Open
B2047 Code - Right Rear Stop Lamp Circuit Open

Common Causes of B2047

  1. Damaged or corroded wiring harness
  2. Faulty stop lamp bulb
  3. Malfunctioning brake light switch
  4. Issue with the vehicle's body control module
  5. Loose or disconnected electrical connections

Symptoms of B2047

  1. Right rear stop lamp not illuminating when brakes are applied
  2. Warning light on the dashboard indicating a brake light malfunction
  3. Cruise control not functioning properly
  4. Other electrical issues related to the right rear stop lamp circuit

How to Fix B2047

  1. Begin by visually inspecting the right rear stop lamp bulb to ensure it is not burned out or damaged. Replace if necessary.
  2. Check the wiring harness for any signs of damage or corrosion. Repair or replace as needed.
  3. Test the brake light switch to determine if it is functioning correctly. Replace if faulty.
  4. Use a multimeter to check for continuity in the right rear stop lamp circuit. Repair any open circuits found.
  5. Clear the diagnostic trouble code from the vehicle's onboard computer using a scan tool.

Cost to Fix B2047

The cost of repairing a right rear stop lamp circuit open issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $50 to $200 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's recommended to obtain quotes from multiple shops to ensure you are getting a fair price.

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Code B2047 Information for Specific Makes

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 B2047 Code

1. What does the OBDII code B2047 mean?

Code B2047 indicates that there is an open circuit in the right rear stop lamp circuit, meaning the electrical connection to the right rear brake light is interrupted.

2. What are the common symptoms of code B2047?

Symptoms include the right rear brake light not working, a warning light on the dashboard, or a possible "Check Lamp" message in some vehicles.

3. What causes the B2047 code to appear?

Common causes include a blown bulb, damaged wiring, corroded connectors, or a faulty brake light socket.

4. Can I still drive my car with the B2047 code?

While the vehicle may still be drivable, it is unsafe due to the non-functioning right rear brake light, which could increase the risk of accidents.

5. How do I diagnose the B2047 code?

Start by checking the right rear brake light bulb, inspect the wiring and connectors for damage or corrosion, and test the brake light socket for proper voltage.

6. How do I fix the B2047 code?

Repairs may involve replacing the brake light bulb, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a faulty brake light socket.

7. Can a blown fuse cause the B2047 code?

Yes, a blown fuse in the brake light circuit can interrupt power to the right rear brake light, triggering the code.

8. How much does it cost to repair a B2047 code?

The cost depends on the issue. Replacing a bulb may cost $10-$20, while fixing damaged wiring or a socket could range from $50 to $200.

9. Can moisture in the tail light assembly cause the B2047 code?

Yes, moisture can lead to corrosion in the connectors or short circuits, which may trigger this code.

10. Will clearing the code with a scan tool fix the issue?

Clearing the code may temporarily reset the warning, but the underlying issue in the right rear stop lamp circuit must be repaired to prevent the code from returning.

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