AutoCodes – Generic – B2666

B2666 Code - Liftgate Release Switch Circuit Failure

Quick Answer

The Vehicle Security Module monitors the Liftgate Release Switch. Common causes include Faulty Liftgate Release Switch, Liftgate Release Switch harness is open or shorted, Liftgate Release Switch 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: B2666 indicates Liftgate Release Switch Circuit Failure.
Common causes: Common causes include Faulty Liftgate Release Switch, Liftgate Release Switch harness is open or shorted, Liftgate Release Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 956

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 Jan 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2666 Description

The Vehicle Security Module monitors the Liftgate Release Switch. The Vehicle Security Module sets the OBDII code when the Liftgate Release Switch is not to factory specifications.

OBDII Code B2666 - Liftgate Release Switch Circuit Failure - AutoCodes.com — B2666 Code - Liftgate Release Switch Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B2666?

Faulty Liftgate Release Switch
Liftgate Release Switch harness is open or shorted
Liftgate Release Switch circuit poor electrical connection
Faulty Vehicle Security Module

How to Fix the DTC B2666?

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 B2666 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.

Need more information about the B2666 code?

Need more information on how to fix the B2666 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2666 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2666 Ford — Liftgate Release Switch Circuit Failure
B2666 Lincoln — Liftgate Release Switch Circuit Failure
B2666 Mercury — Liftgate Release Switch Circuit Failure

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 B2666 Code

1. What are the common symptoms of OBDII code B2666 (Liftgate Release Switch Circuit Failure)?

The common symptoms include the liftgate not opening or closing properly, the liftgate release switch not responding, and the liftgate release system malfunctioning.

2. What can cause the OBDII code B2666 to trigger?

The code B2666 is typically triggered by a faulty liftgate release switch, damaged wiring in the liftgate release circuit, or a malfunctioning liftgate control module.

3. How can I diagnose the cause of the OBDII code B2666?

You can diagnose the issue by checking the condition of the liftgate release switch, inspecting the wiring harness for any damage or loose connections, and using a diagnostic scanner to retrieve specific fault codes.

4. Can I repair the liftgate release switch circuit failure issue myself?

Depending on your skill level, you may be able to repair the issue yourself by replacing the faulty liftgate release switch, repairing any damaged wiring, or resetting the liftgate control module.

5. Is it safe to continue driving with the OBDII code B2666 present?

It is not recommended to drive with the code B2666 present, as it can affect the proper functioning of the liftgate release system and potentially compromise the safety and security of your vehicle.

6. How much does it typically cost to repair the liftgate release switch circuit failure issue?

The cost of repairing the issue can vary depending on the cause of the problem, the extent of the damage, and whether you choose to do the repair yourself or take your vehicle to a professional mechanic.

7. Can a faulty liftgate release switch cause other problems in the vehicle?

A faulty liftgate release switch can potentially cause other issues related to the liftgate operation, such as the liftgate not locking properly or the liftgate release system failing to engage.

8. Are there any preventive measures I can take to avoid the OBDII code B2666 in the future?

To prevent the code B2666 from occurring, you can perform regular maintenance checks on the liftgate release system, avoid overloading the liftgate, and promptly address any issues with the liftgate operation.

9. Will resetting the OBDII code B2666 make it go away permanently?

Resetting the code B2666 may temporarily clear the fault code, but if the underlying issue is not addressed and repaired, the code is likely to reappear once the problem resurfaces.

10. Can a malfunctioning liftgate control module cause the OBDII code B2666?

Yes, a malfunctioning liftgate control module can cause the OBDII code B2666 to trigger, as the module plays a crucial role in the operation of the liftgate release switch circuit.