AutoCodes – Nissan – C1138 Nissan

C1138 Nissan Code - 4-Wheel Active Steer Circuit

Quick Answer

The ABS actuator and electric unit (control unit) and the 4-Wheel Active Steer (4WAS) control unit exchange signals via the Controlled Area Network (CAN) communication line. Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Control Unit, 4WAS System. 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: C1138 Nissan indicates 4-Wheel Active Steer Circuit.
Common causes: Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Control Unit, 4WAS System.
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 3,884

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1138 Nissan Description

The ABS actuator and electric unit (control unit) and the 4-Wheel Active Steer (4WAS) control unit exchange signals via the Controlled Area Network (CAN) communication line.

OBDII Code C1138 Nissan - 4-Wheel Active Steer Circuit - AutoCodes.com — C1138 Nissan Code - 4-Wheel Active Steer Circuit

What does this mean?

What are the Possible Causes of the DTC C1138 Nissan?

Faulty Anti-Lock Brake System (ABS) Actuator and Control Unit
4WAS System

How to Fix the DTC C1138 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 C1138 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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Need more information on how to fix the C1138 Nissan code? Get Access to Factory Service Manuals

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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 C1138 Nissan Code

1. What does OBDII code C1138 for Nissan indicate?

The OBDII code C1138 for Nissan refers to a problem with the 4-Wheel Active Steer Circuit.

2. What are common symptoms of OBDII code C1138 in a Nissan vehicle?

Common symptoms of OBDII code C1138 in a Nissan vehicle may include issues with the steering system, such as erratic steering behavior or a noticeable difference in steering responsiveness.

3. What are possible causes of OBDII code C1138 in a Nissan car?

Possible causes of OBDII code C1138 in a Nissan car include a malfunctioning 4-wheel active steer system, damaged wiring or connectors related to the system, or a faulty steering angle sensor.

4. How can I diagnose OBDII code C1138 in my Nissan vehicle?

Diagnosing OBDII code C1138 in your Nissan vehicle typically involves using a diagnostic scanner to retrieve the trouble codes and then inspecting the 4-wheel active steer system components, wiring, and sensors for any visible damage or faults.

5. Can I continue driving my Nissan with OBDII code C1138 present?

It is not recommended to continue driving your Nissan with OBDII code C1138 present, as it can affect the proper functioning of the steering system, potentially leading to safety hazards.

6. How can I repair OBDII code C1138 in my Nissan car?

Repairing OBDII code C1138 in your Nissan car may involve fixing any damaged wiring or connectors, replacing the faulty steering angle sensor, or addressing any issues with the 4-wheel active steer system components as needed.

7. Is it necessary to reset the OBDII code C1138 after repairing the issue in a Nissan vehicle?

Yes, it is recommended to reset the OBDII code C1138 after repairing the underlying issue in a Nissan vehicle to clear the fault codes and ensure that the system is functioning properly.

8. Can a DIY enthusiast fix OBDII code C1138 in a Nissan car?

While some aspects of diagnosing and repairing OBDII code C1138 in a Nissan car may be within reach of a DIY enthusiast with the necessary skills and tools, complex issues with the 4-wheel active steer system may require professional expertise.

9. How much does it typically cost to repair OBDII code C1138 in a Nissan vehicle?

The cost of repairing OBDII code C1138 in a Nissan vehicle can vary depending on the specific cause of the issue, parts needed for replacement, labor costs, and whether you choose to address the problem yourself or take it to a professional mechanic.

10. Are there any recalls or technical service bulletins related to OBDII code C1138 in Nissan vehicles?

It is recommended to check with Nissan dealerships or online resources for any recalls or technical service bulletins related to OBDII code C1138 in Nissan vehicles, as manufacturers may provide guidance or assistance for known issues.