AutoCodes – Nissan – C1669 Nissan

C1669 Nissan Code - Incomplete Lock Release

Quick Answer

The 4 Wheel Active Steer (4WAS) front lock solenoid valve (lock structure) is controlled by the 4WAS front control unit, and locks/unlocks 4WAS front actuator. Common causes include Faulty 4WAS Front Actuator, 4WAS Front Actuator harness is open or shorted, 4WAS Front Actuator 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: C1669 Nissan indicates Incomplete Lock Release.
Common causes: Common causes include Faulty 4WAS Front Actuator, 4WAS Front Actuator harness is open or shorted, 4WAS Front Actuator 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 878

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 Nov 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1669 Nissan Description

The 4 Wheel Active Steer (4WAS) front lock solenoid valve (lock structure) is controlled by the 4WAS front control unit, and locks/unlocks 4WAS front actuator. If a strong force (rotation direction) is applied to 4WAS front actuator, the locking mechanism (holder) absorbs the force and locks 4WAS front actuator. Front wheel steering angle sensor detects a turning angle of 4WAS front motor. 4WAS front motor controls number of revolutions by a command value from the 4WAS front control unit. Gear shaft is an output axis of 4WAS front motor. (Gear shaft = 4WAS front motor revolution + steering angle) Spiral cables mean the power line and signal lines of 4WAS front motor.

OBDII Code C1669 Nissan - Incomplete Lock Release - AutoCodes.com — C1669 Nissan Code - Incomplete Lock Release

What does this mean?

What are the Possible Causes of the DTC C1669 Nissan?

Faulty 4WAS Front Actuator
4WAS Front Actuator harness is open or shorted
4WAS Front Actuator circuit poor electrical connection

How to Fix the DTC C1669 Nissan?

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 C1669 Nissan 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 C1669 Nissan Code

1. What does the OBDII code C1669 mean on a Nissan?

C1669 indicates an "Incomplete Lock Release" issue, typically related to the parking brake or electronic brake control system.

2. What are the common symptoms of the C1669 code?

Symptoms may include a parking brake warning light on the dashboard, difficulty engaging or releasing the parking brake, or a failure of the brake to release completely.

3. What causes the C1669 code to appear?

The most common causes are a malfunctioning parking brake actuator, a faulty parking brake switch, damaged wiring or connectors, or issues with the electronic control module for the brake system.

4. Can I still drive my Nissan with the C1669 code?

Driving with this code may be possible, but itâ€™s not advisable, as it could lead to issues with the parking brake not fully releasing, which can cause brake wear or reduced vehicle performance.

5. How is the C1669 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the parking brake actuator and related components, check for damaged wiring or connections, and ensure proper system operation.

6. How do I fix the C1669 code on my Nissan?

Repairs may involve replacing the parking brake actuator, repairing damaged wiring, adjusting the parking brake system, or reprogramming the brake control module if needed.

7. Is the C1669 code related to other brake system issues?

Yes, it can be associated with other brake-related codes or malfunctions, particularly if there is a problem with the electronic parking brake system.

8. How much does it cost to repair the C1669 code?

Repair costs vary depending on the root cause but typically range from $200 to $800, depending on whether parts like the parking brake actuator need replacement.

9. Can a weak battery cause the C1669 code?

Yes, a weak or failing battery can cause electrical issues, including improper function of the parking brake system, potentially triggering this code.

10. What maintenance can prevent the C1669 code?

Regularly inspecting the parking brake system, ensuring proper operation of the actuator, and checking for damaged wiring or connectors can help prevent this code from appearing.