AutoCodes – Generic – B186D

B186D Code - Trunk Release Switch Stuck

Quick Answer

The Instrument Cluster monitors the Trunk Release Switch. Common causes include Faulty Trunk Release Switch, Trunk Release Switch harness is open or shorted, Trunk 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: B186D indicates Trunk Release Switch Stuck.
Common causes: Common causes include Faulty Trunk Release Switch, Trunk Release Switch harness is open or shorted, Trunk 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.

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Code Popularity 1,469

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 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B186D Description

The Instrument Cluster monitors the Trunk Release Switch. The Instrument Cluster sets the OBDII code when the Decklid Release Switch Sense circuit is low for over 30 seconds.

OBDII Code B186D - Trunk Release Switch Stuck - AutoCodes.com — B186D Code - Trunk Release Switch Stuck

What does this mean?

What are the Possible Causes of the DTC B186D?

Faulty Trunk Release Switch
Trunk Release Switch harness is open or shorted
Trunk Release Switch circuit poor electrical connection
Faulty Instrument Cluster

How to Fix the DTC B186D?

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 B186D 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 B186D code?

Need more information on how to fix the B186D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B186D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B186D Chrysler — Trunk Release Switch Stuck
B186D Dodge — Trunk Release Switch Stuck
B186D Jeep — Trunk Release Switch Stuck
B186D RAM — Trunk Release Switch Stuck

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 B186D Code

1. What are the common symptoms of OBDII code B186D (Trunk Release Switch Stuck)?

- Common symptoms include the trunk release switch not functioning properly, the trunk not opening, or the trunk release light staying illuminated.

2. What are the potential causes of OBDII code B186D?

- The code B186D can be triggered by a faulty trunk release switch, damaged wiring, a blown fuse, or a malfunctioning trunk release control module.

3. How can I diagnose the issue with the trunk release switch for code B186D?

- To diagnose the problem, check the condition of the trunk release switch, inspect the wiring harness for any damage, and test the continuity of the switch using a multimeter.

4. Can a blown fuse cause OBDII code B186D to appear?

- Yes, a blown fuse related to the trunk release system can trigger code B186D. Checking and replacing any blown fuses is a good troubleshooting step.

5. What are some repair tips for addressing OBDII code B186D (Trunk Release Switch Stuck)?

- Repair tips include checking and replacing the trunk release switch if faulty, repairing any damaged wiring, ensuring proper connections, and resetting the fault code after repairs.

6. Is it possible to temporarily bypass the trunk release switch to open the trunk?

- Yes, in some cases, you can manually activate the trunk release mechanism or use the emergency release inside the trunk to open it if the switch is stuck.

7. Can moisture or water damage cause the trunk release switch to malfunction?

- Yes, exposure to moisture or water can lead to corrosion of the switch contacts or wiring, resulting in a malfunction that triggers OBDII code B186D.

8. Will fixing OBDII code B186D require professional assistance?

- While some DIY enthusiasts may be able to address the issue by replacing the trunk release switch or repairing wiring, consulting a professional mechanic is recommended for accurate diagnosis and repair.

9. How urgent is it to address OBDII code B186D (Trunk Release Switch Stuck)?

- While the code may not affect the overall drivability of the vehicle, addressing it promptly is recommended to ensure convenient access to the trunk and prevent any potential safety issues.

10. Can resetting the vehicle's computer clear OBDII code B186D temporarily?

- Yes, resetting the vehicle's computer may clear the code temporarily, but if the underlying issue with the trunk release switch is not addressed, the code is likely to reappear.