AutoCodes – Generic – B2718

B2718 Code - Liftgate/Decklid Ajar Output Short To Battery

Quick Answer

The Liftgate/Trunk Module (LTM) monitors the Liftgate/Decklid Ajar Switch. Common causes include Faulty Liftgate/Decklid Ajar Switch, Liftgate/Decklid Ajar Switch harness is open or shorted, Liftgate/Decklid Ajar 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: B2718 indicates Liftgate/Decklid Ajar Output Short To Battery.
Common causes: Common causes include Faulty Liftgate/Decklid Ajar Switch, Liftgate/Decklid Ajar Switch harness is open or shorted, Liftgate/Decklid Ajar 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 667

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 26, 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 B2718 Description

The Liftgate/Trunk Module (LTM) monitors the Liftgate/Decklid Ajar Switch. The LTM sets the OBDII code when the LTM detects a short to voltage from the liftgate ajar circuit to the Body Control Module (BCM).

OBDII Code B2718 - Liftgate/Decklid Ajar Output Short To Battery - AutoCodes.com — B2718 Code - Liftgate/Decklid Ajar Output Short To Battery

What does this mean?

What are the Possible Causes of the DTC B2718?

Faulty Liftgate/Decklid Ajar Switch
Liftgate/Decklid Ajar Switch harness is open or shorted
Liftgate/Decklid Ajar Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2718?

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 B2718 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 B2718 code?

Need more information on how to fix the B2718 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2718 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2718 Ford — Liftgate/Decklid Ajar Output Short To Battery
B2718 Lincoln — Liftgate/Decklid Ajar Output Short To Battery
B2718 Mercury — Liftgate/Decklid Ajar Output Short To Battery

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 B2718 Code

1. What does OBDII code B2718 mean?

Code B2718 indicates a problem with the liftgate or decklid ajar output circuit, specifically a short to the battery.

2. What are the symptoms of code B2718?

Common symptoms include the liftgate or decklid ajar warning light staying on, failure of the liftgate to function properly, or intermittent electrical issues in the rear of the vehicle.

3. What causes code B2718 to trigger?

This code is usually caused by a short circuit in the wiring, a faulty liftgate ajar sensor, or a malfunctioning control module.

4. Can code B2718 affect other vehicle systems?

Yes, it can potentially drain the battery or interfere with other electrical components related to the liftgate or decklid.

5. How is code B2718 diagnosed?

A technician will inspect the wiring and connectors for damage, test the liftgate ajar sensor, and check the control module for faults.

6. Can I fix code B2718 myself?

If you're familiar with electrical systems, you can inspect and repair damaged wiring or replace the ajar sensor. Otherwise, it's best to seek professional help.

7. How much does it cost to fix code B2718?

Repairs can range from $50 to $300 depending on whether the issue is minor, like damaged wiring, or requires part replacement.

8. Will clearing the code fix the problem?

Simply clearing the code will not resolve the issue. The underlying cause must be repaired to prevent the code from returning.

9. What tools are needed to diagnose code B2718?

Basic tools include a digital multimeter, an OBDII scanner, and possibly wiring diagrams for your vehicle.

10. Is it safe to drive with code B2718 active?

While it may not immediately affect drivability, prolonged issues could lead to battery drain or further electrical problems, so repairs should not be delayed.