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B1666 Lincoln Code - Seat Driver Recline Motor Stalled

Quick Answer

The B1666 diagnostic trouble code (DTC) for Lincoln vehicles specifically indicates an issue with the seat driver recline motor being stalled. Common causes include Mechanical failure within the recline motor, Electrical issue affecting the motor's operation, Wiring problem or loose connections. 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
B1666 Lincoln indicates Seat Driver Recline Motor Stalled.
Common causes
Common causes include Mechanical failure within the recline motor, Electrical issue affecting the motor's operation, Wiring problem or loose connections.
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 29, 2024
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Code B1666 Lincoln Description

The B1666 diagnostic trouble code (DTC) for Lincoln vehicles specifically indicates an issue with the seat driver recline motor being stalled. This means that the motor responsible for adjusting the recline position of the driver's seat is not functioning properly. The recline motor is an essential component of the seat adjustment system, allowing the driver to adjust the seatback angle for optimal comfort while driving. When this motor stalls, it can lead to an inability to adjust the seatback angle, potentially causing discomfort and affecting the driver's ability to find a suitable driving position.

OBDII Code B1666 Lincoln - Seat Driver Recline Motor Stalled
B1666 Lincoln Code - Seat Driver Recline Motor Stalled

Common Causes of B1666 Lincoln

  1. Mechanical failure within the recline motor.
  2. Electrical issue affecting the motor's operation.
  3. Wiring problem or loose connections.
  4. Faulty seat adjustment switch.
  5. Malfunctioning control module responsible for seat adjustments.

Symptoms of B1666 Lincoln

  1. Inability to adjust the recline angle of the driver's seat.
  2. Unusual noises coming from the seat adjustment mechanism.
  3. The seatback may get stuck in a certain position.
  4. The seat may feel uncomfortable or misaligned while driving.

How to Fix B1666 Lincoln

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scan tool to retrieve the DTC and pinpoint the problem area.
  2. Inspect the recline motor, wiring, and connections for any signs of damage or wear. Replace any faulty components as needed.
  3. Test the seat adjustment switch and control module to ensure they are functioning correctly. Replace if necessary.
  4. Clear the DTC from the vehicle's computer system after completing the repairs.
  5. Test the seat recline motor to verify that it is now functioning properly and that the driver can adjust the seatback angle as intended.

Cost to Fix B1666 Lincoln

The typical repair costs for addressing a B1666 DTC related to a stalled seat driver recline motor in a Lincoln vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts and labor for this repair could range from $200 to $500. 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 make and model of the vehicle, and the labor rates charged. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for this repair. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may differ 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 B1666 Lincoln Code

1. What does the OBDII code B1666 mean on a Lincoln?

B1666 indicates that the Seat Driver Recline Motor has stalled, meaning the motor is unable to move the seat backrest as commanded.

2. What are common symptoms of the B1666 code in a Lincoln?

Symptoms include the driver's seat backrest not reclining or adjusting properly, unusual noises from the motor, or the motor not responding at all.

3. What causes the B1666 code to appear?

The code is typically caused by a faulty seat recline motor, electrical issues such as a short or open circuit, or mechanical obstructions preventing the motor from moving.

4. How can I diagnose the B1666 code on my Lincoln?

Start by inspecting the seat recline motor for damage or obstructions, checking the wiring and connectors for continuity, and using a scan tool to confirm the fault.

5. Can I still drive my Lincoln with a B1666 code?

Yes, the code does not affect drivability, but it may compromise seat comfort and adjustability, which could impact driving ergonomics.

6. How do I fix the B1666 code on a Lincoln?

Repairs may include replacing the seat recline motor, repairing damaged wiring, or clearing any mechanical obstructions in the seat adjustment mechanism.

7. How much does it cost to fix the B1666 code?

Repair costs vary but typically range from $100 to $400, depending on whether the motor needs replacement or if it’s a simpler electrical issue.

8. Can I reset the B1666 code without repairs?

Clearing the code with a scan tool may work temporarily, but the issue will likely return unless the underlying problem is resolved.

9. What tools are needed to troubleshoot the B1666 code?

A scan tool capable of reading body control module codes, a multimeter for electrical testing, and basic hand tools for inspecting and repairing the seat motor are typically required.

10. Is a B1666 code covered under warranty for a Lincoln?

It depends on your vehicle’s warranty coverage. If the seat adjustment mechanism is still under warranty, repairs may be covered. Check with your dealership for details.

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