AutoCodes – Buick – B3882 Buick

B3882 Buick Code - Right Tail Lamp Circuit Short to Ground

Quick Answer

The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. Common causes include Faulty Right Tail Lamp, Right Tail Lamp harness is open or shorted, Right Tail 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: B3882 Buick indicates Right Tail Lamp Circuit Short to Ground.
Common causes: Common causes include Faulty Right Tail Lamp, Right Tail Lamp harness is open or shorted, Right Tail 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 1,015

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 Mar 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3882 Buick Description

The brake pedal position sensor is used to sense the action of the driver 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 will apply battery voltage to the left and right stop lamp control circuits as well as the center high mounted stop lamp relay control circuit illuminating the left and right stop lamps and the center high mounted stop lamp. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground in the right stop lamp control circuit.

OBDII Code B3882 Buick - Right Tail Lamp Circuit Short to Ground - AutoCodes.com — B3882 Buick Code - Right Tail Lamp Circuit Short to Ground

What does this mean?

What are the Possible Causes of the DTC B3882 Buick?

Faulty Right Tail Lamp
Right Tail Lamp harness is open or shorted
Right Tail Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3882 Buick?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3882 Buick 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.

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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 B3882 Buick Code

1. What does the OBDII code B3882 mean on a Buick?

The code B3882 indicates a "Right Tail Lamp Circuit Short to Ground," meaning thereâ€™s an electrical issue causing the right tail lamp circuit to unintentionally connect to the vehicle's ground.

2. What are the common symptoms of code B3882 on a Buick?

Symptoms may include the right tail lamp not functioning, dim or flickering lights, a blown fuse, or other electrical malfunctions in the lighting system.

3. What causes the B3882 code on a Buick?

The most common causes are damaged wiring, a short circuit, a faulty right tail lamp bulb, corroded connectors, or a defective body control module (BCM).

4. Can I still drive my Buick with the B3882 code?

Yes, but driving with a malfunctioning tail lamp can reduce visibility and increase the risk of an accident, as well as make you legally non-compliant with road safety regulations.

5. How do I diagnose the B3882 code on my Buick?

Start by inspecting the right tail lamp, its bulb, and the wiring for visible damage or corrosion. Use a multimeter to check for continuity and ground faults in the circuit.

6. How do I fix the B3882 code on my Buick?

Repairs may involve replacing a damaged bulb, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/repairing the BCM if necessary.

7. Can a blown fuse cause the B3882 code to appear?

Yes, a blown fuse in the tail lamp circuit could be both a symptom and a contributing factor, often caused by a short to ground.

8. Is the B3882 code specific to Buick vehicles?

While the code B3882 is most commonly associated with Buick vehicles, similar codes may appear in other GM models with the same issue.

9. How much does it cost to fix the B3882 code on a Buick?

Repair costs vary depending on the issue. Replacing a bulb or fixing wiring may cost $50â€“$150, while BCM repairs or replacements can cost several hundred dollars.

10. Can a faulty BCM cause the B3882 code?

Yes, a malfunctioning Body Control Module can misinterpret or fail to process the tail lamp circuit properly, leading to this error code.