AutoCodes – Pontiac – B3669 Pontiac

B3669 Pontiac Code - Deck Lid Position Sensor Circuit

Quick Answer

S2 is the Rear Compartment Cylinder Extended Sensor. Common causes include Faulty Deck Lid Position Sensor, Deck Lid Position Sensor harness is open or shorted, Deck Lid Position Sensor 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: B3669 Pontiac indicates Deck Lid Position Sensor Circuit.
Common causes: Common causes include Faulty Deck Lid Position Sensor, Deck Lid Position Sensor harness is open or shorted, Deck Lid Position Sensor 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 478

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 Mar 13, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B3669 Pontiac Description

S2 is the Rear Compartment Cylinder Extended Sensor. The Folding Top Control (FTC) module uses S2 to determine the position of the deck lid while in the reverse open position. S2 is a hall effect sensor that becomes active when the deck lid is in the reverse open position. The Diagnostic Trouble Code (DTC) sets if a short to ground, short to voltage, or open is detected on the signal circuit of S2.

OBDII Code B3669 Pontiac - Deck Lid Position Sensor Circuit - AutoCodes.com — B3669 Pontiac Code - Deck Lid Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B3669 Pontiac?

Faulty Deck Lid Position Sensor
Deck Lid Position Sensor harness is open or shorted
Deck Lid Position Sensor circuit poor electrical connection

How to Fix the DTC B3669 Pontiac?

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 does this mean?

Code Tech Notes

B3669 01 Deck Lid Position Sensor Circuit short to battery
B3669 06 Deck Lid Position Sensor Circuit short to ground or open
B3669 58 Deck Lid Position Sensor Circuit incorrect reaction after event
B3669 59 Deck Lid Position Sensor Circuit circuit/component protection time out

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3669 Pontiac 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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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 B3669 Pontiac Code

1. What are the common symptoms of OBDII code B3669 (Pontiac) related to the Deck Lid Position Sensor Circuit?

The common symptoms include the trunk not opening or closing properly, the trunk release button not working, and the trunk warning light staying illuminated.

2. What are the possible causes of OBDII code B3669 (Pontiac) indicating an issue with the Deck Lid Position Sensor Circuit?

The possible causes include a faulty deck lid position sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning trunk control module, or a blown fuse related to the trunk system.

3. How can I diagnose the issue with the Deck Lid Position Sensor Circuit causing OBDII code B3669 (Pontiac)?

You can diagnose the problem by visually inspecting the sensor and its wiring for any visible damage, testing the sensor for proper functionality, checking the trunk control module for faults, and scanning the vehicle's computer for additional error codes.

4. Can I repair the Deck Lid Position Sensor Circuit issue causing OBDII code B3669 (Pontiac) myself?

Depending on your level of automotive repair experience, you may be able to repair the issue yourself by replacing the faulty sensor, repairing damaged wiring or connectors, or resetting the trunk control module. However, seeking professional help is recommended for accurate diagnosis and repair.

5. Are there any temporary fixes or workarounds for OBDII code B3669 (Pontiac) related to the Deck Lid Position Sensor Circuit?

Temporary fixes may include manually opening or closing the trunk, disconnecting and reconnecting the battery to reset the system, or checking for any obstructions hindering the trunk's operation. However, these are not permanent solutions and the underlying issue should be addressed.

6. Is it safe to continue driving with OBDII code B3669 (Pontiac) triggered by a problem with the Deck Lid Position Sensor Circuit?

While the vehicle may still be operable with this code present, it is not advisable to ignore the issue as it can lead to inconvenience and potential safety hazards. It is recommended to have the problem diagnosed and repaired promptly.

7. How much does it typically cost to repair OBDII code B3669 (Pontiac) associated with the Deck Lid Position Sensor Circuit?

The cost of repair can vary depending on the underlying cause of the issue. Replacing a faulty sensor or repairing wiring may cost a few hundred dollars, while addressing a more complex problem with the trunk control module could be more expensive.

8. Can extreme weather conditions affect the Deck Lid Position Sensor Circuit and trigger OBDII code B3669 (Pontiac)?

Extreme temperatures or moisture exposure can potentially affect the sensor's performance and lead to circuit issues triggering the OBDII code B3669. It is important to keep the trunk area dry and protected from harsh weather conditions.

9. How long does it take to repair the Deck Lid Position Sensor Circuit issue causing OBDII code B3669 (Pontiac)?

The repair time can vary depending on the extent of the problem and the availability of parts. Simple fixes like sensor replacement may take a few hours, while more complex issues could require a day or more for diagnosis and repair.

10. Can regular maintenance prevent issues with the Deck Lid Position Sensor Circuit and OBDII code B3669 (Pontiac)?

Regularly inspecting the trunk system, keeping it clean and free of debris, and addressing any minor issues promptly can help prevent problems with the Deck Lid Position Sensor Circuit. Additionally, following the manufacturer's maintenance schedule can aid in early detection of potential concerns.