Engine-CodesBuick – P1666 Buick

P1666 Buick Code - Driver 3 Line 6

Quick Answer

The P1666 code for Buick vehicles specifically refers to an issue with Driver 3 Line 6. Common causes include Faulty driver's seat memory module, Loose or damaged wiring connections, Corrosion or water damage to the seat memory module. 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
P1666 Buick indicates Driver 3 Line 6.
Common causes
Common causes include Faulty driver's seat memory module, Loose or damaged wiring connections, Corrosion or water damage to the seat memory module.
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 10, 2024
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Code P1666 Buick Description

The P1666 code for Buick vehicles specifically refers to an issue with Driver 3 Line 6. This code typically indicates a fault with the driver's seat memory module or related components. The driver's seat memory module is responsible for storing and recalling seat position settings, such as seat height, angle, and distance from the steering wheel. When this module malfunctions, it can lead to issues with the driver's seat not adjusting correctly or not holding the programmed settings.

OBDII Code P1666 Buick - Driver 3 Line 6
P1666 Buick Code - Driver 3 Line 6

Common Causes of P1666 Buick

  1. Faulty driver's seat memory module.
  2. Loose or damaged wiring connections.
  3. Corrosion or water damage to the seat memory module.
  4. Software issues with the vehicle's control module.
  5. Physical damage to the driver's seat controls.

Symptoms of P1666 Buick

  1. Inability to adjust the driver's seat position.
  2. Erratic movement of the driver's seat.
  3. Failure of the seat memory function to recall saved settings.
  4. Illumination of the seat memory system warning light on the dashboard.

How to Fix P1666 Buick

  1. Begin by diagnosing the specific cause of the P1666 code using a diagnostic scanner to pinpoint the exact issue.
  2. Inspect the wiring connections for any signs of damage, corrosion, or looseness. Repair or replace any faulty wiring as needed.
  3. Test the driver's seat memory module for proper functionality and replace it if found to be defective.
  4. Reset the seat memory settings and reprogram the driver's preferred seat position.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the driver's seat to ensure proper operation.

Cost to Fix P1666 Buick

The typical repair costs for addressing the P1666 code in a Buick vehicle can range from $200 to $500, including parts and labor. However, it is important to note that actual costs can vary based on factors such as the specific cause of the issue, the model year of the vehicle, and the labor rates at the auto repair shop. Additionally, diagnostic time and labor rates can vary between different locations and types of repair facilities. It is recommended to obtain a detailed estimate from a qualified mechanic before proceeding with the repair.

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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.

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