C1138 Nissan : 4-Wheel Active Steer Circuit
If you own a Nissan and have encountered the C1138 code, you may be wondering . This code refers to a problem with the 4-wheel active steer circuit, which is responsible for controlling the steering system. If left unaddressed, this issue can lead to serious safety concerns while driving. However, with the right knowledge and tools, you can diagnose and repair the problem yourself or seek the help of a qualified mechanic.Most models of Nissan will work with the fixes we will discuss for the C1138 code. The fixes we will discuss are applicable to both older and newer models of Nissan vehicles. By following the steps outlined below, you can resolve the C1138 code and get your Nissan back on the road in no time.
Key Takeaways:
Meaning: C1138 code in Nissan indicates a problem in the 4-wheel active steer circuit.
Causes: Faulty steering angle sensor, damaged wiring, malfunctioning control module, or a failed actuator can cause this code.
Symptoms: Illuminated ABS and traction control lights, difficulty in steering, and unusual noises while turning are some common symptoms of C1138 code.
Fixes: Fixing the underlying issue causing the code, resetting the system, or replacing the faulty components can help resolve the C1138 code in Nissan.
C1138 Code Nissan:
The C1138 code in Nissan vehicles refers to a problem in the 4-wheel active steer circuit. This system is responsible for adjusting the angle of the rear wheels to improve handling and stability. When the code appears, it means that the system has detected a malfunction in one of its components, such as a faulty sensor or actuator. This can lead to poor handling, reduced stability, and even safety issues while driving.
To fix the C1138 code, the first step is to diagnose the specific component that is causing the problem. This requires specialized diagnostic equipment and expertise, so it is recommended to take the vehicle to a qualified mechanic or dealership. Once the problem has been identified, the faulty component can be repaired or replaced as needed. It is important to address this issue promptly to ensure safe and reliable operation of the vehicle.
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What are the Signs or Symptoms of the C1138 Code in Nissan?
The C1138 code in Nissan is related to the 4-wheel active steer circuit. This code indicates that there is a problem with the active steering system, which is responsible for adjusting the angle of the wheels to improve handling and stability. Here are some of the signs or symptoms that you may experience if your Nissan has a C1138 code:
- Warning light: The most obvious sign of a C1138 code is the illumination of the check engine light on the dashboard. This light may appear as a solid or flashing light, depending on the severity of the problem.
- Steering problems: Since the active steering system is responsible for adjusting the angle of the wheels, you may experience problems with steering if this system is not functioning properly. You may notice that the steering feels loose or unresponsive, or that the car pulls to one side while driving.
- Noise: Another symptom of a C1138 code is unusual noises coming from the steering system. You may hear a whining or grinding sound when turning the wheel, or a clunking noise when going over bumps.
- Poor handling: The active steering system is designed to improve handling and stability, so if it is not working correctly, you may notice that the car feels unstable or difficult to control. This can be especially noticeable at high speeds or when making sharp turns.
- Reduced fuel efficiency: Finally, a C1138 code can also lead to reduced fuel efficiency. This is because the active steering system is designed to improve handling and stability, which can help to reduce drag and improve aerodynamics. If this system is not functioning properly, it can lead to increased drag and reduced fuel efficiency.
If you notice any of these symptoms in your Nissan, it is important to have the problem diagnosed and repaired as soon as possible. Ignoring a C1138 code can lead to further damage to the steering system, which can be expensive to repair. A qualified mechanic can use a diagnostic tool to read the code and determine the underlying cause of the problem. Depending on the severity of the issue, they may need to replace a faulty component or repair the wiring or connections in the
Possible Causes of C1138 Code in Nissan Vehicles
The C1138 code in Nissan vehicles refers to a problem in the 4-wheel active steer circuit. This code indicates that there is an issue with the communication between the steering angle sensor and the electronic control module (ECM). Here are some of the possible causes of the C1138 code:
- Failed steering angle sensor: The steering angle sensor is responsible for measuring the angle of the steering wheel and transmitting this information to the ECM. If the sensor fails, it can cause the C1138 code to appear.
- Wiring issues: The wiring that connects the steering angle sensor to the ECM can become damaged or corroded over time. This can cause a communication error and trigger the C1138 code.
- Failed ECM: In some cases, the ECM itself may be the problem. If the ECM fails, it can cause a communication error with the steering angle sensor and trigger the C1138 code.
- Low battery voltage: If the battery voltage is low, it can cause a communication error between the steering angle sensor and the ECM. This can trigger the C1138 code.
- Failed 4-wheel active steer actuator: The 4-wheel active steer actuator is responsible for adjusting the rear wheels to improve handling and stability. If the actuator fails, it can cause the C1138 code to appear.
It is important to note that the C1138 code can also be triggered by other issues, such as a failed ABS module or a malfunctioning yaw rate sensor. Therefore, it is important to have a professional mechanic diagnose the problem to determine the exact cause of the code. Once the cause has been identified, the mechanic can then perform the necessary repairs to fix the issue and clear the code.
Fixes for C1138 Code Nissan
The C1138 code in Nissan vehicles indicates a problem with the 4-wheel active steer circuit. This system is responsible for adjusting the angle of the rear wheels to improve handling and stability. When this code appears, it means that there is a malfunction in the circuit, which can lead to poor performance and safety issues. Here are some possible fixes for the C1138 code:
1. Check the wiring and connections: The first step in fixing the C1138 code is to inspect the wiring and connections in the 4-wheel active steer circuit. Look for any signs of damage, corrosion, or loose connections. If any issues are found, repair or replace the affected components as needed.
2. Replace the 4-wheel active steer control unit: If the wiring and connections are in good condition, the next step is to replace the 4-wheel active steer control unit. This component is responsible for controlling the angle of the rear wheels, and a malfunctioning unit can cause the C1138 code to appear. A new control unit should be installed and programmed to the vehicle’s specifications.
3. Check the rear wheel alignment: In some cases, the C1138 code may be caused by an issue with the rear wheel alignment. If the wheels are not properly aligned, it can affect the performance of the 4-wheel active steer system. Have the alignment checked and adjusted as needed.
4. Inspect the rear suspension: Another possible cause of the C1138 code is a problem with the rear suspension. If any components are worn or damaged, it can affect the performance of the 4-wheel active steer system. Inspect the suspension and replace any damaged parts as needed.
5. Reset the system: In some cases, the C1138 code may be triggered by a temporary glitch in the system. Try resetting the system by disconnecting the battery for a few minutes and then reconnecting it. This may clear the code and restore normal operation.
In conclusion, the C1138 code in Nissan vehicles can be caused by a variety of issues related to the 4-wheel active steer circuit. By following these fixes, you can diagnose and repair the problem, restoring the performance and safety of your vehicle.
How Much Will It Cost to Fix the C1138 Code in a Nissan?
The C1138 code in a Nissan indicates a problem with the 4-wheel active steer circuit. This can be caused by a variety of issues, including a malfunctioning steering angle sensor, a faulty actuator, or a damaged wiring harness.
The cost to fix the C1138 code in a Nissan will depend on the specific cause of the problem. If the issue is with the steering angle sensor, the cost to replace it can range from $150 to $300. If the actuator needs to be replaced, the cost can be anywhere from $500 to $1,000.
In some cases, the problem may be with the wiring harness, which can be more difficult and time-consuming to repair. This can result in a higher cost, potentially ranging from $1,000 to $2,000.
It’s important to have the issue diagnosed by a qualified mechanic to determine the exact cause of the C1138 code and get an accurate estimate for the cost of repairs.
Possible Causes and Fixes of Code C1138 Nissan
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Malfunctioning 4-wheel active steer actuator | Replace the 4-wheel active steer actuator | $500-$1000 |
| Defective 4-wheel active steer control unit | Replace the 4-wheel active steer control unit | $800-$1200 |
| Wiring issues in the 4-wheel active steer system | Repair or replace damaged wiring | $200-$500 |
| Low or contaminated power steering fluid | Flush and refill power steering fluid | $50-$100 |
| Malfunctioning power steering pump | Replace power steering pump | $300-$600 |
How Serious is the C1138 Code in Nissan?
The C1138 code in Nissan indicates a problem with the 4-wheel active steer circuit. This system is responsible for adjusting the angle of the rear wheels to improve handling and stability while driving. If this system fails, it can affect the overall performance and safety of the vehicle.
It is important to address the C1138 code as soon as possible to prevent further damage to the vehicle. Ignoring this code can lead to more serious issues and potentially dangerous driving conditions. It is recommended to have a professional mechanic diagnose and repair the issue to ensure proper functioning of the 4-wheel active steer system.
Can You Still Drive with the C1138 Code on Your Nissan?
If your Nissan is showing the C1138 code, it means that there is a problem with the 4-wheel active steer circuit. This system is responsible for adjusting the angle of the rear wheels to improve handling and stability while driving.
While it may be possible to continue driving with this code, it is not recommended. The active steer system is an important safety feature that can affect the handling and stability of your vehicle. Driving with a malfunctioning system can increase the risk of accidents and make it more difficult to control your car.
If you see the C1138 code on your Nissan, it is best to have it diagnosed and repaired by a qualified mechanic as soon as possible to ensure your safety on the road.
Conclusion
In conclusion, the C1138 code in Nissan vehicles indicates a problem with the 4-wheel active steer circuit. This can cause issues with the vehicle’s steering and handling, making it unsafe to drive. To fix this issue, it is recommended to take the vehicle to a certified mechanic who can diagnose and repair the problem. Ignoring this issue can lead to further damage and potentially dangerous driving conditions. It is important to address any warning codes or lights on your vehicle’s dashboard as soon as possible to ensure the safety and longevity of your vehicle.
FAQ
What does the C1138 code mean for Nissan?
The C1138 code for Nissan indicates a problem with the 4-wheel active steer circuit. This system is responsible for adjusting the steering angle of all four wheels to improve handling and stability.
What are the symptoms of a C1138 code?
The symptoms of a C1138 code may include a warning light on the dashboard, difficulty steering, and reduced handling and stability while driving.
What causes a C1138 code in Nissan vehicles?
A C1138 code in Nissan vehicles can be caused by a variety of issues, including a malfunctioning steering angle sensor, damaged wiring or connectors, or a faulty control module.
Can I still drive my Nissan with a C1138 code?
It is not recommended to drive your Nissan with a C1138 code as it can affect the handling and stability of the vehicle, potentially leading to a dangerous situation on the road.
How can I fix a C1138 code in my Nissan?
The best way to fix a C1138 code in your Nissan is to take it to a certified mechanic who can diagnose the issue and make the necessary repairs. This may involve replacing a faulty component, repairing damaged wiring, or resetting the control module.
Learn about more c codes in Nissan here.
