AutoCodes – Nissan – C1621 Nissan

C1621 Nissan Code - 4-Wheel Active Steer Front Actuator

Quick Answer

4-Wheel Active Steer (4WAS) front actuator mainly consists of five components. Common causes include Faulty 4-Wheel Active Steer Front Actuator, 4-Wheel Active Steer Front Actuator harness is open or shorted, 4-Wheel Active Steer 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: C1621 Nissan indicates 4-Wheel Active Steer Front Actuator.
Common causes: Common causes include Faulty 4-Wheel Active Steer Front Actuator, 4-Wheel Active Steer Front Actuator harness is open or shorted, 4-Wheel Active Steer 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 1,138

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 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code C1621 Nissan Description

4-Wheel Active Steer (4WAS) front actuator mainly consists of five components. 4WAS front lock solenoid valve (lock structure), front wheel steering angle sensor, 4WAS front motor, gear shaft, and spiral cable.

OBDII Code C1621 Nissan - 4-Wheel Active Steer Front Actuator - AutoCodes.com — C1621 Nissan Code - 4-Wheel Active Steer Front Actuator

What does this mean?

What are the Possible Causes of the DTC C1621 Nissan?

Faulty 4-Wheel Active Steer Front Actuator
4-Wheel Active Steer Front Actuator harness is open or shorted
4-Wheel Active Steer Front Actuator circuit poor electrical connection

How to Fix the DTC C1621 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 C1621 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.