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Engine-Codes – Generic – B2718

B2718 Code - Liftgate/Decklid Ajar Output Short To Battery

Quick Answer

The diagnostic trouble code B2718 indicates that there is a short circuit between the liftgate or decklid ajar output and the battery. Common causes include Damaged wiring or connectors, Corrosion in the electrical connections, Faulty liftgate or decklid ajar sensor. 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 Damaged wiring or connectors, Corrosion in the electrical connections, Faulty liftgate or decklid ajar sensor.
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 13, 2024
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Code B2718 Description

The diagnostic trouble code B2718 indicates that there is a short circuit between the liftgate or decklid ajar output and the battery. This means that the signal that indicates whether the liftgate or decklid is open or closed is being shorted to the battery, causing a malfunction in the system. This issue can affect the vehicle's performance by causing incorrect readings on the dashboard, such as displaying that the liftgate or decklid is open when it is actually closed, or vice versa.

OBDII Code B2718 - Liftgate/Decklid Ajar Output Short To Battery
B2718 Code - Liftgate/Decklid Ajar Output Short To Battery

Common Causes of B2718

  1. Damaged wiring or connectors
  2. Corrosion in the electrical connections
  3. Faulty liftgate or decklid ajar sensor
  4. Short circuit in the electrical system
  5. Water damage to the sensor or wiring

Symptoms of B2718

  1. Dashboard warning light indicating liftgate or decklid ajar when it is closed
  2. Inability to lock the liftgate or decklid
  3. Alarms going off randomly due to incorrect sensor readings
  4. Power liftgate or decklid not functioning properly
  5. Battery drain due to the short circuit

How to Fix B2718

  1. Begin by conducting a visual inspection of the wiring and connectors for any signs of damage or corrosion.
  2. Test the liftgate or decklid ajar sensor to determine if it is functioning correctly.
  3. Use a multimeter to check for continuity and shorts in the wiring.
  4. Repair or replace any damaged wiring, connectors, or sensors as needed.
  5. Clear the diagnostic trouble code from the vehicle's system and test to ensure the issue has been resolved.

Cost to Fix B2718

The typical repair costs for resolving a liftgate/decklid ajar output short to battery issue can range from $100 to $300, depending on the extent of the damage and the parts needed for replacement. This estimate includes both parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local shops for a more accurate estimate.

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Code B2718 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 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.

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