AutoCodes – Generic – B18DE

B18DE Code - Power Liftgate Handle Switch Circuit Low

Quick Answer

The Power Liftgate Module monitors the Power Liftgate Handle Switch Circuit. Common causes include Faulty Power Liftgate Handle Switch, Power Liftgate Handle Switch harness is open or shorted, Power Liftgate Handle 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: B18DE indicates Power Liftgate Handle Switch Circuit Low.
Common causes: Common causes include Faulty Power Liftgate Handle Switch, Power Liftgate Handle Switch harness is open or shorted, Power Liftgate Handle 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.

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Code Popularity 668

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 Jul 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B18DE Description

The Power Liftgate Module monitors the Power Liftgate Handle Switch Circuit. When the Power Liftgate Module senses a voltage of less than 2.0 volts on the Liftgate Handle Switch Sense circuit for longer than 20 seconds this code will set.

OBDII Code B18DE - Power Liftgate Handle Switch Circuit Low - AutoCodes.com — B18DE Code - Power Liftgate Handle Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B18DE?

Faulty Power Liftgate Handle Switch
Power Liftgate Handle Switch harness is open or shorted
Power Liftgate Handle Switch circuit poor electrical connection
Faulty Power Liftgate Module

How to Fix the DTC B18DE?

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 B18DE 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 B18DE code?

Need more information on how to fix the B18DE code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B18DE code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B18DE Chrysler — Power Liftgate Handle Switch Circuit Low
B18DE Dodge — Power Liftgate Handle Switch Circuit Low
B18DE Jeep — Power Liftgate Handle Switch Circuit Low
B18DE RAM — Power Liftgate Handle Switch Circuit Low

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 B18DE Code

1. What are the common symptoms of OBDII code B18DE (Power Liftgate Handle Switch Circuit Low)?

- Common symptoms include the power liftgate not opening or closing properly, the liftgate handle switch not responding, and a warning light on the dashboard.

2. What can cause the OBDII code B18DE to trigger?

- The code B18DE is triggered when the power liftgate handle switch circuit is experiencing low voltage or a poor electrical connection.

3. How can I diagnose the Power Liftgate Handle Switch Circuit Low issue?

- You can diagnose the issue by checking the wiring and connections related to the power liftgate handle switch, testing the switch itself for proper functionality, and using a diagnostic scanner to read the OBDII trouble code.

4. Can a faulty liftgate handle switch cause the B18DE code?

- Yes, a faulty liftgate handle switch can cause the B18DE code if it is not sending the correct signals due to internal damage or wear.

5. What are some repair tips for fixing the Power Liftgate Handle Switch Circuit Low problem?

- Repair tips include checking and repairing any damaged wiring or connections, replacing the liftgate handle switch if necessary, and clearing the trouble code with a diagnostic scanner after the repair.

6. Is it safe to continue driving with the B18DE trouble code active?

- It is generally safe to drive with the B18DE trouble code, but it is important to address the issue promptly to ensure the proper functioning of the power liftgate system.

7. Can a DIY enthusiast fix the Power Liftgate Handle Switch Circuit Low problem?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the issue. However, it is recommended to seek professional help if you are unsure.

8. How much does it typically cost to repair the B18DE trouble code?

- The cost of repairing the B18DE trouble code can vary depending on the cause of the issue, but it may involve expenses for parts and labor at an automotive repair shop.

9. Will disconnecting the battery reset the B18DE trouble code?

- Disconnecting the battery may temporarily clear the trouble code, but it is not a permanent solution. The underlying issue causing the code to trigger needs to be addressed for a lasting fix.

10. Can extreme weather conditions affect the Power Liftgate Handle Switch Circuit and trigger the B18DE code?

- Yes, extreme weather conditions such as extreme cold or heat can affect the electrical components of the liftgate handle switch circuit and potentially trigger the B18DE trouble code.