Engine-Codes.com
Engine-Codes – Generic – B3667

B3667 Code - Tonneau Release Circuit

Quick Answer

The B3667 diagnostic trouble code (DTC) refers to an issue with the tonneau release circuit in the vehicle. Common causes include Faulty tonneau release switch, Wiring issues or shorts in the tonneau release circuit, Malfunctioning tonneau cover motor. 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
B3667 indicates Tonneau Release Circuit.
Common causes
Common causes include Faulty tonneau release switch, Wiring issues or shorts in the tonneau release circuit, Malfunctioning tonneau cover motor.
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 06, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B3667 Description

The B3667 diagnostic trouble code (DTC) refers to an issue with the tonneau release circuit in the vehicle. The tonneau release circuit is responsible for controlling the opening and closing of the tonneau cover, which is the cover that protects the bed of a pickup truck. When this circuit malfunctions, it can prevent the tonneau cover from opening or closing properly, leading to potential issues with cargo security, weather protection, and overall usability of the truck bed.

OBDII Code B3667 - Tonneau Release Circuit
B3667 Code - Tonneau Release Circuit

Common Causes of B3667

  1. Faulty tonneau release switch
  2. Wiring issues or shorts in the tonneau release circuit
  3. Malfunctioning tonneau cover motor
  4. Defective tonneau control module
  5. Poor connection or corrosion in the electrical system related to the tonneau release circuit

Symptoms of B3667

  1. Inability to open or close the tonneau cover electronically
  2. Dashboard warning light related to tonneau release circuit
  3. Unusual noises or vibrations when attempting to operate the tonneau cover
  4. Intermittent operation of the tonneau cover
  5. Tonneau cover getting stuck in a partially open or closed position

How to Fix B3667

  1. Perform a diagnostic scan to confirm the B3667 code and pinpoint the exact cause of the issue.
  2. Inspect the tonneau release switch, wiring, and connections for any visible damage or corrosion.
  3. Test the tonneau cover motor and control module for proper functionality and replace if necessary.
  4. Repair or replace any damaged wiring or components in the tonneau release circuit.
  5. Clear the DTC and test the tonneau cover operation to ensure proper function before completing the repair.

Cost to Fix B3667

The typical repair costs for resolving the B3667 code related to the tonneau release circuit can range from $150 to $500, depending on the specific cause of the issue and the parts/labour required for the repair. It is important to consider additional diagnostic time and labour rates at auto repair shops, which can vary based on factors like location, vehicle make and model, and engine type. It is advisable to consult with a professional mechanic to get an accurate estimate for this repair.

Need more information about the B3667 code?

Need more information on how to fix the B3667 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3667 code diagnosed by a professional: Find a repair shop in your area

Code B3667 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 B3667 Code

1. What does the OBDII code B3667 mean?

The code B3667 refers to a malfunction in the tonneau release circuit, which controls the release mechanism for a vehicle's tonneau cover.

2. What are the common symptoms of code B3667?

Symptoms include the tonneau cover not opening or closing properly, failure of the release mechanism to respond, or the activation of a warning light.

3. What causes the B3667 code to appear?

Common causes include a faulty tonneau release motor, damaged wiring or connectors in the release circuit, or a malfunctioning control module.

4. Can a blown fuse cause the B3667 code?

Yes, a blown fuse in the tonneau release circuit can interrupt power and trigger the B3667 code.

5. How do I diagnose the B3667 code?

Diagnose the code by inspecting the release motor, checking wiring and connectors for damage, testing fuses, and using a scan tool to monitor the circuit's functionality.

6. Can I still drive my vehicle with the B3667 code active?

Yes, you can typically drive the vehicle, but the tonneau cover may not function properly, affecting access or security for items stored in that area.

7. How do I fix the B3667 code?

Repairs may include replacing the tonneau release motor, repairing or replacing damaged wiring, or resetting the control module after addressing the issue.

8. How much does it cost to fix the B3667 code?

The repair cost depends on the root cause, ranging from $50 to $500, with wiring repairs being less expensive and motor replacements costing more.

9. Can the B3667 code clear itself?

The code may clear itself if the issue is intermittent and corrects temporarily, but repairs are needed to prevent it from returning.

10. Is the B3667 code specific to certain vehicles?

The B3667 code is most commonly associated with vehicles equipped with power-operated tonneau covers, such as some trucks and SUVs.

Discuss the causes and fixes for B3667 OBDII Code

Submit a New Comment

Code B3667 comments

No comments found for this page.