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Engine-Codes – Generic – B16B3

B16B3 Code - Right Stop Lamp Control Circuit

Quick Answer

The B16B3 diagnostic trouble code (DTC) refers to a fault in the right stop lamp control circuit of a vehicle. Common causes include Faulty brake light bulb, Corroded or damaged wiring in the right stop lamp circuit, Defective 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
B16B3 indicates Right Stop Lamp Control Circuit.
Common causes
Common causes include Faulty brake light bulb, Corroded or damaged wiring in the right stop lamp circuit, Defective 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 07, 2024
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Code B16B3 Description

The B16B3 diagnostic trouble code (DTC) refers to a fault in the right stop lamp control circuit of a vehicle. This code typically indicates an issue with the circuit that controls the right stop lamp, which is the brake light located on the right side of the vehicle. When this code is triggered, it means that there is a problem with the electrical system responsible for activating the right stop lamp when the brakes are applied.

OBDII Code B16B3 - Right Stop Lamp Control Circuit
B16B3 Code - Right Stop Lamp Control Circuit

Common Causes of B16B3

  1. Faulty brake light bulb
  2. Corroded or damaged wiring in the right stop lamp circuit
  3. Defective brake light switch
  4. Blown fuse in the right stop lamp circuit
  5. Faulty control module responsible for activating the right stop lamp

Symptoms of B16B3

  1. Right stop lamp not illuminating when brakes are applied
  2. Dashboard warning light indicating a brake light malfunction
  3. Flickering or dim right stop lamp
  4. Intermittent operation of the right stop lamp
  5. Complete failure of the right stop lamp to function

How to Fix B16B3

  1. Inspect the right stop lamp bulb to ensure it is not burnt out or damaged. Replace if necessary.
  2. Check the wiring in the right stop lamp circuit for any signs of corrosion or damage. Repair or replace as needed.
  3. Test the brake light switch to determine if it is functioning properly. Replace if found to be faulty.
  4. Check the fuse in the right stop lamp circuit to see if it has blown. Replace if necessary.
  5. If the issue persists, diagnose the control module responsible for the right stop lamp and replace if found to be defective.

Cost to Fix B16B3

The typical repair costs for addressing a B16B3 DTC can vary depending on the specific cause of the issue. In general, replacing a brake light bulb can cost anywhere from $5 to $20, while repairing or replacing wiring may range from $50 to $200. The cost of a brake light switch can be around $20 to $50, and a fuse replacement may be as low as $5. Labor costs at auto repair shops can range from $80 to $150 per hour, so the total repair cost can vary based on the time required to diagnose and fix the issue. It is advisable to consult a professional mechanic for a more accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for B16B3

B16AF-11 RIGHT STOP LAMP CONTROL CIRCUIT SHORT TO GROUND
B16AF-15 RIGHT STOP LAMP CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

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Code B16B3 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 B16B3 Code

1. What are the common symptoms of OBDII code B16B3 (Right Stop Lamp Control Circuit)?

- The common symptoms include the right stop lamp not functioning properly, the brake lights staying on constantly, or the brake lights not turning on at all.

2. What are the possible causes of OBDII code B16B3?

- The code B16B3 can be triggered by issues such as a faulty brake light switch, damaged wiring or connectors in the right stop lamp circuit, or a defective control module.

3. How can I diagnose the cause of OBDII code B16B3?

- To diagnose the issue, you can start by checking the right stop lamp bulb, inspecting the wiring and connectors for any damage, testing the brake light switch, and scanning the vehicle for any other related trouble codes.

4. Can I still drive my vehicle with OBDII code B16B3?

- It is not recommended to drive your vehicle with OBDII code B16B3 as it can compromise your safety on the road due to malfunctioning brake lights.

5. How can I repair OBDII code B16B3 (Right Stop Lamp Control Circuit) myself?

- Depending on the cause, you may need to replace the right stop lamp bulb, repair or replace damaged wiring or connectors, or replace the faulty brake light switch to resolve the issue.

6. Will resetting the OBDII code B16B3 make it go away permanently?

- Resetting the code may temporarily turn off the warning light, but if the underlying issue causing the code is not fixed, it is likely to reappear.

7. Is it necessary to take my vehicle to a mechanic for OBDII code B16B3 repair?

- While some DIY repairs are possible, it is recommended to consult a qualified mechanic for an accurate diagnosis and proper repair of OBDII code B16B3 to ensure safety and effectiveness.

8. Can a malfunctioning right stop lamp cause other problems in the vehicle?

- Yes, a malfunctioning right stop lamp can lead to safety hazards, affect the vehicle's brake light system, and potentially trigger other related warning lights on the dashboard.

9. How much does it typically cost to repair OBDII code B16B3?

- The repair cost for OBDII code B16B3 can vary depending on the cause of the issue, parts needed for replacement, and labor charges. It is advisable to obtain estimates from local mechanics.

10. Are there any preventive measures to avoid OBDII code B16B3 in the future?

- Regularly checking and maintaining the brake light system, replacing bulbs at recommended intervals, and addressing any issues promptly can help prevent OBDII code B16B3 from occurring.

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