Engine-CodesBuick – B3802 Buick

B3802 Buick Code - Park Lamps Request Circuit

Quick Answer

The B3802 Buick code refers to an issue with the Park Lamps Request Circuit in the vehicle. Common causes include Faulty body control module (BCM) or lighting control module (LCM), Wiring issues, such as shorts, opens, or high resistance in the circuit, Blown fuse related to the park lamps. 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
B3802 Buick indicates Park Lamps Request Circuit.
Common causes
Common causes include Faulty body control module (BCM) or lighting control module (LCM), Wiring issues, such as shorts, opens, or high resistance in the circuit, Blown fuse related to the park lamps.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B3802 Buick Description

The B3802 Buick code refers to an issue with the Park Lamps Request Circuit in the vehicle. This code indicates that there is a problem with the circuit that controls the park lamps, which are the lights on the exterior of the vehicle that illuminate when the parking or headlights are turned on. The park lamps are essential for visibility and safety, especially in low-light conditions.

OBDII Code B3802 Buick - Park Lamps Request Circuit
B3802 Buick Code - Park Lamps Request Circuit

Common Causes of B3802 Buick

  1. Faulty body control module (BCM) or lighting control module (LCM).
  2. Wiring issues, such as shorts, opens, or high resistance in the circuit.
  3. Blown fuse related to the park lamps.
  4. Corrosion or damage to the connectors in the park lamp circuit.
  5. Defective park lamp bulbs or sockets.

Symptoms of B3802 Buick

  1. Park lamps not turning on when the parking or headlights are activated.
  2. Flickering or dim park lamps.
  3. Dashboard warning light indicating a lighting system malfunction.
  4. Other electrical issues in the vehicle, such as problems with the turn signals or brake lights.

How to Fix B3802 Buick

  1. Use a diagnostic scan tool to retrieve the B3802 code and perform a thorough inspection of the park lamp circuit.
  2. Check the fuse related to the park lamps and replace it if necessary.
  3. Inspect the wiring and connectors in the park lamp circuit for any damage or corrosion. Repair or replace as needed.
  4. Test the body control module (BCM) or lighting control module (LCM) for proper function and replace if faulty.
  5. Replace any defective park lamp bulbs or sockets to ensure proper illumination.

Cost to Fix B3802 Buick

The typical repair costs for addressing the B3802 Buick code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this issue can range from $100 to $300, including parts and labor. However, it's important to note that the actual cost may be higher or lower based on factors such as the location of the repair shop, the vehicle make and model, and the extent of the repairs needed. It's recommended to obtain a detailed estimate from a qualified mechanic to determine the exact cost of addressing the Park Lamps Request Circuit issue. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may vary based on the shop's location and expertise.

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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 B3802 Buick Code

1. What are the common symptoms of OBDII code B3802 Buick related to the Park Lamps Request Circuit?

- The common symptoms include park lamps not turning on or functioning intermittently, or a warning light on the dashboard indicating a lighting system issue.

2. What are the possible causes of OBDII code B3802 Buick for the Park Lamps Request Circuit?

- Possible causes include a faulty park lamp switch, damaged wiring or connectors in the lighting system, a defective body control module (BCM), or issues with the park lamp relay.

3. How can I diagnose OBDII code B3802 Buick for the Park Lamps Request Circuit?

- Diagnose by checking the park lamp switch for proper functionality, inspecting the wiring and connectors for any damage, testing the park lamp relay, and scanning the BCM for fault codes related to the lighting system.

4. What repair tips can help fix OBDII code B3802 Buick for the Park Lamps Request Circuit?

- Repair tips may include replacing a faulty park lamp switch, repairing or replacing damaged wiring or connectors, testing and replacing the park lamp relay if necessary, and reprogramming or replacing the BCM if found to be defective.

5. Can I drive my Buick with OBDII code B3802 related to the Park Lamps Request Circuit?

- It is not recommended to drive the vehicle with this code as it may indicate a problem with the park lamp system, affecting visibility and safety, especially in low-light conditions.

6. How urgent is it to address OBDII code B3802 Buick for the Park Lamps Request Circuit?

- It is important to address this code promptly to ensure the proper functioning of the park lamps for safety reasons and to prevent potential issues with the lighting system.

7. Are there any recalls or technical service bulletins related to OBDII code B3802 Buick for the Park Lamps Request Circuit?

- Check with a Buick dealership or service center for any relevant recalls or technical service bulletins related to this specific OBDII code and lighting system issue.

8. Can a DIY enthusiast fix OBDII code B3802 Buick for the Park Lamps Request Circuit?

- Depending on the root cause, some DIY enthusiasts with automotive repair experience may be able to diagnose and repair this code, but complex electrical issues may require professional assistance.

9. How much does it cost to repair OBDII code B3802 Buick for the Park Lamps Request Circuit?

- The cost of repair can vary based on the specific cause of the code, parts needed for replacement, and labor rates. It is advisable to obtain quotes from reputable repair shops for an accurate estimate.

10. Will resetting the OBDII system clear the B3802 code related to the Park Lamps Request Circuit?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the code is not resolved, it is likely to reappear. It is recommended to diagnose and fix the root cause of the code.

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