AutoCodes – Chevrolet – B3884 2016 Chevrolet Silverado

B3884 2016 Chevrolet Silverado Code - Center High Mounted Stop Lamp Circuit

Quick Answer

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Faulty Center High Mounted Stop Lamp, Center High Mounted Stop Lamp harness is open or shorted, Center High Mounted Stop Lamp circuit poor electrical connection. 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: B3884 2016 Chevrolet Silverado indicates Center High Mounted Stop Lamp Circuit.
Common causes: Common causes include Faulty Center High Mounted Stop Lamp, Center High Mounted Stop Lamp harness is open or shorted, Center High Mounted Stop Lamp circuit poor electrical connection.
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.

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Code Popularity 275

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 16, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B3884 2016 Chevrolet Silverado Description

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The Body Control Module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM energizes the stop lamp relay by applying a voltage to the stop lamp relay control circuit. When the stop lamp relay is energized, the relay switch contacts close, and battery voltage is applied to the Center High Mounted Stop Lamp (CHMSL) control circuit which illuminates the CHMSL. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a malfunction in the stop lamp relay control circuit.

OBDII Code B3884 2016 Chevrolet Silverado - Center High Mounted Stop Lamp Circuit - AutoCodes.com — B3884 2016 Chevrolet Silverado Code - Center High Mounted Stop Lamp Circuit

What does this mean?

What are the Possible Causes of the DTC B3884 2016 Chevrolet Silverado?

Faulty Center High Mounted Stop Lamp
Center High Mounted Stop Lamp harness is open or shorted
Center High Mounted Stop Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3884 2016 Chevrolet Silverado?

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

What does this mean?

Code Tech Notes

B3884:01 Center High Mounted Stop Lamp Circuit Short to Battery
B3884:02 Center High Mounted Stop Lamp Circuit Short to Ground
B3884:04 Center High Mounted Stop Lamp Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3884 2016 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B3884 2016 Chevrolet Silverado code?

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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 B3884 2016 Chevrolet Silverado Code

1. What does the OBDII code B3884 on a 2016 Chevrolet Silverado mean?

The code B3884 indicates a problem with the Center High Mounted Stop Lamp Circuit in the vehicle.

2. What are the common symptoms of a B3884 trouble code in a 2016 Chevrolet Silverado?

Common symptoms include the center high-mounted stop lamp not working, the brake light staying on continuously, or the brake light flickering intermittently.

3. What are the possible causes of the B3884 trouble code in a 2016 Chevrolet Silverado?

Potential causes may include a faulty center high-mounted stop lamp assembly, a damaged wiring harness, a blown fuse, or a malfunctioning brake light switch.

4. How can I diagnose the B3884 trouble code in my 2016 Chevrolet Silverado?

You can start by visually inspecting the center high-mounted stop lamp for any visible damage. Then, check the wiring and connections for any signs of wear or corrosion. Finally, use a multimeter to test the voltage at the stop lamp circuit.

5. What are some repair tips for fixing the B3884 trouble code in a 2016 Chevrolet Silverado?

If the center high-mounted stop lamp is faulty, replace it with a new assembly. Ensure all wiring connections are secure and free of corrosion. Check and replace any blown fuses related to the stop lamp circuit.

6. Can I continue driving my 2016 Chevrolet Silverado with the B3884 trouble code?

It is not recommended to drive the vehicle with a malfunctioning center high-mounted stop lamp, as it can compromise road safety. Get the issue diagnosed and repaired as soon as possible.

7. How much does it typically cost to repair the B3884 trouble code in a 2016 Chevrolet Silverado?

The cost of repair can vary depending on the specific cause of the issue. Replacing a faulty stop lamp assembly may cost between $50 to $150, while repairing wiring or fuse issues can range from $100 to $300.

8. Will resetting the trouble codes clear the B3884 code in my 2016 Chevrolet Silverado?

Resetting the trouble codes may temporarily clear the B3884 code, but if the underlying issue is not fixed, the code is likely to return. It's important to diagnose and repair the root cause of the problem.

9. How can I prevent the B3884 trouble code from recurring in my 2016 Chevrolet Silverado?

Regularly inspecting the center high-mounted stop lamp for any damage, maintaining a clean and secure wiring harness, and promptly addressing any brake light issues can help prevent the B3884 trouble code from reoccurring.

10. Is the B3884 trouble code a common issue in 2016 Chevrolet Silverado vehicles?

While it may not be extremely common, issues with the Center High Mounted Stop Lamp Circuit can occur in 2016 Chevrolet Silverado vehicles, especially with age and wear on the components.