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Engine-Codes – Generic – B16B5

B16B5 Code - Right Stop Lamp Control Circuit High

Quick Answer

The B16B5 diagnostic trouble code (DTC) refers to a problem in the right stop lamp control circuit being detected as having a high voltage. Common causes include Faulty stop lamp switch, Wiring issues or short circuits in the right stop lamp control circuit, Corrosion or damage to the connectors or terminals. 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
B16B5 indicates Right Stop Lamp Control Circuit High.
Common causes
Common causes include Faulty stop lamp switch, Wiring issues or short circuits in the right stop lamp control circuit, Corrosion or damage to the connectors or terminals.
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 06, 2024
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Code B16B5 Description

The B16B5 diagnostic trouble code (DTC) refers to a problem in the right stop lamp control circuit being detected as having a high voltage. This means that there is an issue with the circuit that controls the right stop lamp, which could lead to the brake light not functioning properly. This can be a safety concern as other drivers may not be able to see when you are braking, potentially leading to accidents. The stop lamp control circuit is an essential part of the vehicle's lighting system, as it signals to drivers behind you when you are braking. If left unaddressed, this issue can also cause increased strain on other electrical components in the vehicle.

OBDII Code B16B5 - Right Stop Lamp Control Circuit High
B16B5 Code - Right Stop Lamp Control Circuit High

Common Causes of B16B5

  1. Faulty stop lamp switch
  2. Wiring issues or short circuits in the right stop lamp control circuit
  3. Corrosion or damage to the connectors or terminals
  4. Issues with the body control module (BCM)
  5. Faulty brake light bulb

Symptoms of B16B5

  1. Right brake light not functioning
  2. Check engine light illuminated on the dashboard
  3. Flickering or dim brake light
  4. Brake light staying on constantly
  5. Fuse blowing repeatedly

How to Fix B16B5

  1. Check the stop lamp switch for proper functioning and replace if necessary
  2. Inspect the wiring in the right stop lamp control circuit for any damage or shorts and repair as needed
  3. Check and clean the connectors and terminals for corrosion or damage
  4. Test the body control module for any faults and replace if necessary
  5. Replace the right brake light bulb if it is found to be faulty

Cost to Fix B16B5

The cost of repairing a right stop lamp control circuit high code can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the parts required for this repair may cost between $50 to $150, while labor costs can range from $80 to $150 per hour. Overall, the total cost may range from $150 to $300 or more, depending on the extent of the repair needed. It's recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate for your specific vehicle.

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Code B16B5 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 B16B5 Code

1. What are the common symptoms of OBDII code B16B5 (Right Stop Lamp Control Circuit High)?

- The common symptoms include the right stop lamp staying illuminated constantly or flickering intermittently, even when the brake pedal is not pressed.

2. What are the possible causes of the Right Stop Lamp Control Circuit High error code?

- The code B16B5 can be triggered by issues such as a faulty stop lamp switch, wiring harness problems, a defective lamp control module, or a short circuit in the right stop lamp circuit.

3. How can I diagnose the cause of the Right Stop Lamp Control Circuit High error code?

- You can start by visually inspecting the right stop lamp, checking the wiring harness for any visible damage, and testing the stop lamp switch for continuity using a multimeter. If necessary, a scan tool can help pinpoint the exact issue.

4. Can I still drive my vehicle with the B16B5 code present?

- While the code itself may not affect the drivability of the vehicle, it is important to address the underlying issue promptly to ensure proper brake light operation and maintain safety on the road.

5. How do I repair the Right Stop Lamp Control Circuit High issue?

- Repairing the B16B5 code involves fixing the specific cause of the problem, which may include replacing a faulty stop lamp switch, repairing damaged wiring, replacing a defective lamp control module, or addressing any short circuits in the circuit.

6. Are there any DIY tips for fixing the Right Stop Lamp Control Circuit High error?

- DIY enthusiasts with automotive repair experience may attempt to inspect and replace the stop lamp switch or repair damaged wiring themselves. However, for more complex issues, it is recommended to seek professional help.

7. Will resetting the error code make the issue go away permanently?

- Simply resetting the error code without addressing the underlying cause will not permanently resolve the B16B5 code. The issue must be diagnosed and repaired to prevent the code from reoccurring.

8. How much can I expect to pay for repairing the Right Stop Lamp Control Circuit High problem?

- The cost of repairing the B16B5 code can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or seek professional help. It is advisable to obtain quotes from local mechanics for an accurate estimate.

9. Is the Right Stop Lamp Control Circuit High error a common issue in certain vehicle makes and models?

- The B16B5 code can occur in various vehicle makes and models, particularly those equipped with complex lamp control modules and electronic systems. It is not limited to a specific manufacturer.

10. Can the Right Stop Lamp Control Circuit High error affect other vehicle systems?

- While the B16B5 code primarily relates to the right stop lamp control circuit, it may also impact other systems that rely on brake light signals, such as the vehicle's stability control or cruise control systems.

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