B3667 Code - Tonneau Release Circuit
Quick Answer
When the power folding top is operated to open or close the folding top, the Body Control Module (BCM) controls the folding top cover latch release operation through the folding top cover release relay control circuit and the tonneau release relay. Common causes include Faulty Tonneau Release Relay, Tonneau Release Relay harness is open or shorted, Tonneau Release Relay 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
- B3667 indicates Tonneau Release Circuit.
- Common causes
- Common causes include Faulty Tonneau Release Relay, Tonneau Release Relay harness is open or shorted, Tonneau Release Relay 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.
Code B3667 Description
What are the Possible Causes of the DTC B3667?
- Faulty Tonneau Release Relay
- Tonneau Release Relay harness is open or shorted
- Tonneau Release Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3667?
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 B3667 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.
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Information for Specific Makes
- B3667 Chevrolet — Tonneau Release Circuit
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.
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