AutoCodes – Generic – C1668

C1668 Code - Lock Holder Gap Detect

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: C1668 indicates Lock Holder Gap Detect.
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 1,386

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 C1668 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 C1668 - Lock Holder Gap Detect - AutoCodes.com — C1668 Code - Lock Holder Gap Detect

What does this mean?

What are the Possible Causes of the DTC C1668?

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

How to Fix the DTC C1668?

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 C1668 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 C1668 code?

Need more information on how to fix the C1668 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1668 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1668 Infiniti — Lock Holder Gap Detect
C1668 Nissan — Lock Holder Gap Detect

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 C1668 Code

1. What does OBDII code C1668 mean?

C1668 refers to "Lock Holder Gap Detect," indicating a detected issue with the gap or alignment of a locking mechanism, often in systems like electronic parking brakes or locks.

2. What are the common symptoms of code C1668?

Symptoms may include a warning light on the dashboard, failure of the locking mechanism to engage or release, or abnormal noise when the system operates.

3. What causes the C1668 code to appear?

Common causes include misaligned lock components, dirt or debris interfering with the mechanism, faulty sensors, or wiring issues in the locking system.

4. Can I drive with a C1668 code?

While the vehicle may still be drivable, it is not recommended to ignore the issue, as it could compromise the functionality of systems like electronic parking brakes or door locks.

5. How do you diagnose code C1668?

A technician will inspect the locking mechanism, check for physical misalignment or damage, and use diagnostic tools to test the sensors and wiring for faults.

6. What repairs are needed to fix code C1668?

Repairs may include realigning lock components, cleaning the mechanism, replacing faulty sensors, or repairing damaged wiring.

7. How much does it cost to fix code C1668?

The cost can vary depending on the specific issue, but it typically ranges from $100 to $500, depending on whether parts need replacement or just adjustment.

8. Can I fix the C1668 code myself?

If you have experience with vehicle repairs, you might be able to fix minor alignment issues or clean the mechanism. However, complex sensor or wiring issues may require professional help.

9. What tools are needed to address a C1668 code?

You may need a diagnostic scanner, basic hand tools, alignment gauges, and possibly electrical testing equipment to troubleshoot and resolve the issue.

10. How can I prevent the C1668 code from occurring?

Regular maintenance, avoiding excessive debris buildup in locking mechanisms, and addressing any unusual locking or unlocking behaviors promptly can help prevent this issue.