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Engine-Codes – Generic – B16B7

B16B7 Code - Center Stop Lamp Control Circuit

Quick Answer

The B16B7 diagnostic trouble code (DTC) refers to a fault in the center stop lamp control circuit of a vehicle. Common causes include Faulty center stop lamp bulb, Wiring issues such as a short circuit or open 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
B16B7 indicates Center Stop Lamp Control Circuit.
Common causes
Common causes include Faulty center stop lamp bulb, Wiring issues such as a short circuit or open 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 B16B7 Description

The B16B7 diagnostic trouble code (DTC) refers to a fault in the center stop lamp control circuit of a vehicle. The center stop lamp, also known as the third brake light, is an important safety feature that signals to drivers behind you when you are braking. When this code is triggered, it means that there is a problem with the circuit responsible for controlling the center stop lamp. This can have serious implications for the vehicle's safety, as other drivers may not be aware of your braking intentions, increasing the risk of a rear-end collision.

OBDII Code B16B7 - Center Stop Lamp Control Circuit
B16B7 Code - Center Stop Lamp Control Circuit

Common Causes of B16B7

  1. Faulty center stop lamp bulb.
  2. Wiring issues such as a short circuit or open circuit.
  3. Defective brake light switch.
  4. BCM malfunction.
  5. Corrosion or poor connections in the wiring harness.

Symptoms of B16B7

  1. Center stop lamp not illuminating when the brake pedal is pressed.
  2. Center stop lamp flickering or remaining on constantly.
  3. Dashboard warning light indicating a brake light issue.
  4. Other drivers signaling that the brake light is not working.

How to Fix B16B7

  1. Inspect the center stop lamp bulb and replace if necessary.
  2. Check the wiring for any visible damage or corrosion, repair or replace as needed.
  3. Test the brake light switch for proper functionality and replace if faulty.
  4. Scan the BCM for any error codes and address any related issues.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scan tool.

Cost to Fix B16B7

The cost of repairing a B16B7 DTC can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing a center stop lamp bulb can cost around $10-$20, while addressing wiring or switch issues may range from $50-$200. If the problem lies with the BCM, the cost can be higher, potentially ranging from $200-$500 or more. Additionally, labor rates at auto repair shops can range from $80 to $150 per hour, so it's advisable to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for B16B7

B16B7-11 CENTER STOP LAMP CONTROL CIRCUIT SHORT TO GROUND
B16B7-15 CENTER STOP LAMP CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

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Code B16B7 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 B16B7 Code

1. What are the common symptoms of OBDII code B16B7 (Center Stop Lamp Control Circuit)?

- The common symptoms include the center brake light not working, the brake light staying on constantly, or the brake light not illuminating when the brake pedal is pressed.

2. What are the possible causes of OBDII code B16B7?

- The code B16B7 can be caused by issues such as a faulty center high mount stop lamp, a damaged wiring harness, a faulty brake light switch, or a problem with the body control module.

3. How can I diagnose the OBDII code B16B7?

- To diagnose the code B16B7, you can start by visually inspecting the center high mount stop lamp and the wiring harness. You can also use a multimeter to test the continuity of the wiring and check the brake light switch for proper operation.

4. What are some repair tips for fixing OBDII code B16B7?

- Repair tips for OBDII code B16B7 may include replacing the faulty center high mount stop lamp, repairing or replacing damaged wiring harness, adjusting or replacing the brake light switch, or reprogramming the body control module if necessary.

5. Can I still drive my vehicle with OBDII code B16B7 present?

- It is generally safe to drive the vehicle with the OBDII code B16B7, but it is recommended to address the issue promptly to ensure proper operation of the center stop lamp for safety reasons.

6. How much does it cost to repair OBDII code B16B7?

- The cost of repairing OBDII code B16B7 can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair the problem yourself or take it to a professional mechanic.

7. Is OBDII code B16B7 a serious issue?

- OBDII code B16B7 is not typically considered a serious issue in terms of vehicle drivability, but it should be addressed to ensure proper brake light functionality and overall safety while driving.

8. Can a DIY enthusiast fix OBDII code B16B7?

- Depending on the DIY enthusiast's knowledge and experience with automotive electrical systems, it is possible to fix OBDII code B16B7 by following diagnostic procedures and repair tips, but professional assistance may be necessary in some cases.

9. Will OBDII code B16B7 cause my vehicle to fail an emissions test?

- OBDII code B16B7 is related to the center stop lamp control circuit and is not directly related to emissions, so it should not cause your vehicle to fail an emissions test.

10. How often does OBDII code B16B7 occur in vehicles?

- OBDII code B16B7 (Center Stop Lamp Control Circuit) is a relatively common issue in vehicles, especially in older models or vehicles with high mileage due to wear and tear on electrical components.

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