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Engine-Codes – Generic – B1986

B1986 Code - Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure

Quick Answer

The B1986 diagnostic trouble code (DTC) indicates a failure in the circuit related to the driver's seat seatback autoglide rearward switch. Common causes include Damaged wiring or connectors in the seatback autoglide circuit, Faulty seatback autoglide rearward switch, Malfunctioning control module responsible for seatback adjustment. 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
B1986 indicates Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure.
Common causes
Common causes include Damaged wiring or connectors in the seatback autoglide circuit, Faulty seatback autoglide rearward switch, Malfunctioning control module responsible for seatback adjustment.
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 09, 2024
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Code B1986 Description

The B1986 diagnostic trouble code (DTC) indicates a failure in the circuit related to the driver's seat seatback autoglide rearward switch. This switch is responsible for controlling the movement of the driver's seatback, allowing it to glide rearward automatically. When this circuit fails, it can prevent the seatback from moving as intended, potentially causing inconvenience and discomfort to the driver.

OBDII Code B1986 - Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure
B1986 Code - Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure

Common Causes of B1986

  1. Damaged wiring or connectors in the seatback autoglide circuit.
  2. Faulty seatback autoglide rearward switch.
  3. Malfunctioning control module responsible for seatback adjustment.
  4. Poor electrical connection in the seatback autoglide system.
  5. Wear and tear due to prolonged use of the seatback autoglide system.

Symptoms of B1986

  1. Inability to adjust the seatback position automatically.
  2. Unresponsive seatback autoglide switch.
  3. Seatback movement is limited or erratic.
  4. Illumination of the seatback autoglide warning light on the dashboard.
  5. Audible clicking or buzzing noise when attempting to adjust the seatback.

How to Fix B1986

  1. Begin by conducting a thorough inspection of the seatback autoglide system to identify the specific component causing the circuit failure.
  2. Check the wiring harness, connectors, and switch for any signs of damage or corrosion. Replace any faulty components as needed.
  3. Test the seatback autoglide switch and control module to determine if they are functioning correctly. Replace them if necessary.
  4. Clear the DTC from the vehicle's onboard diagnostic system using a compatible scan tool.
  5. Test the seatback autoglide system to ensure that the issue has been resolved and that the seatback can now move rearward automatically as intended.

Cost to Fix B1986

The typical repair costs for addressing a B1986 DTC related to the driver's seat seatback autoglide rearward switch circuit failure can vary depending on the specific cause of the issue and the cost of replacement parts. In general, the repair costs for this type of electrical circuit issue could range from $150 to $400, including parts and labor.

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Code B1986 Information for Specific Makes

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 B1986 Code

1. What are the common symptoms of OBDII code B1986?

The common symptoms of OBDII code B1986 include failure of the driver's seat seatback to automatically glide rearward, issues with the seat adjustment controls, and potential warning lights on the dashboard.

2. What could cause the OBDII code B1986 to occur?

The OBDII code B1986, indicating Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure, is typically caused by a malfunction in the seatback autoglide rearward switch circuit. This can be due to wiring issues, a faulty switch, or a problem with the seat control module.

3. How can I diagnose the OBDII code B1986 issue?

To diagnose the OBDII code B1986, it's recommended to use a diagnostic scanner to retrieve the specific error code. Additionally, inspecting the wiring and connectors related to the seatback autoglide switch, as well as testing the switch itself, can help pinpoint the problem.

4. Are there any DIY repair tips for fixing OBDII code B1986?

If you're comfortable working with automotive electrical systems, you can attempt to repair OBDII code B1986 by checking and repairing any damaged wiring, replacing the faulty switch, or resetting the seat control module. However, it's advisable to consult a professional if you're unsure.

5. Can OBDII code B1986 be dangerous to ignore?

Ignoring OBDII code B1986 may not pose an immediate safety risk, but it can lead to inconvenience and discomfort due to the driver's seat seatback not functioning properly. Additionally, unresolved issues with the seat controls could potentially impact your driving experience.

6. How much does it typically cost to repair OBDII code B1986?

The cost of repairing OBDII code B1986 can vary depending on the underlying cause of the issue and whether you choose to DIY or seek professional help. Repair costs may include parts, labor, and diagnostic fees, so it's best to obtain quotes from reputable automotive technicians.

7. Is it possible to reset OBDII code B1986 without fixing the issue?

Resetting OBDII code B1986 without addressing the underlying problem, such as a faulty switch or wiring issue, may temporarily clear the error code but will not resolve the root cause. It's recommended to diagnose and fix the issue to prevent the code from reoccurring.

8. How can I prevent OBDII code B1986 from happening again in the future?

To prevent OBDII code B1986 from happening again, it's essential to maintain the driver's seat components properly, avoid rough handling of the seat controls, and periodically inspect the wiring and switches for any signs of wear or damage. Regular vehicle maintenance can help prevent such issues.

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