The P1900 Nissan code is an indication of a problem within the radiator cooling fan motor control circuit. When this code is present, it means that the radiator cooling fan motor is not operating as expected.
This article provides an overview of the P1900 Nissan code, its possible causes and symptoms, diagnosis, repair, and safety recalls related to Nissan vehicles.
Understanding this code and its related issues will help ensure that your vehicle is operating safely and efficiently.
Key Takeaways
- The P1900 Nissan code indicates a problem with the radiator cooling fan motor control circuit.
- Possible causes of the code include a faulty radiator cooling fan motor relay, motor, open or shorted harness, or poor electrical connection.
- Diagnosis involves visually inspecting the wiring harness and connectors for any damage or corrosion.
- Repairing the code requires replacing any faulty components and ensuring proper electrical current flow through the system.
What Is the P1900 Nissan Code
The P1900 Nissan code is related to a malfunction of the Radiator Cooling Fan Motor control. It is typically triggered by a faulty Radiator Cooling Fan Motor Relay, faulty Radiator Cooling Fan Motor, open or shorted Radiator Cooling Fan Motor harness, or a poor electrical connection in the Radiator Cooling Fan Motor circuit.
Symptoms of this code include the Engine Light being illuminated (or the Service Engine Soon Warning Light), as well as decreased engine performance.
To fix this code, it is important to visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector pins.
Additionally, it is important to check any Factory Service Bulletins issued by Nissan for further instructions.
Diagnosis and repair costs may vary depending on the make, model, and engine type of the vehicle.
Causes of the P1900 Nissan Code
Possible causes of the P1900 fault include:
- A faulty radiator cooling fan motor relay
- A faulty motor
- An open or shorted harness
- Poor electrical connection
All of these can lead to the engine light coming on or the service engine soon warning light.
To diagnose and fix this, it is important to:
- Visually inspect the wiring harness and connectors
- Check for any damaged components
- Look for broken, bent, pushed out, or corroded connector pins
- Check for any factory service bulletins issued by Nissan
Diagnosing and fixing this code can be costly, as most auto repair shops charge between $75 and $150 per hour. Therefore, it is important to be aware of all the costs associated with this code before attempting to repair it.
Diagnosing the P1900 Nissan Code
Diagnosing the issue requires an inspection of the wiring harness and connectors, as well as a check for any damaged components or corroded pins.
To diagnose the P1900 Nissan code, it’s important to understand what the code means. The code indicates that the Cooling Fan Motor(s) is controlled by the Engine Control Module (ECM) and that the ECM is not compensating properly for the cooling fan’s operation.
To identify the cause of the issue, it’s important to visually inspect the wiring harness and connectors, check for any damaged components, and look for broken, bent, or corroded connector pins.
If any of these components are found to be faulty, they should be replaced before any further diagnosis is performed.
It’s important to search for any Factory Service Bulletins that may have been issued for this code.
Repairing the P1900 Nissan Code
Repairing the issue requires replacement of any faulty components. This includes checking for faulty Radiator Cooling Fan Motor Relay, Motor, and harness, as well as inspecting the wiring connections for any damage or corrosion. If necessary, replace any damaged components and ensure the proper electrical current is flowing through the system. Additionally, make sure to check for any Factory Service Bulletins issued by Nissan to ensure the correct operation of the system.
Once all components and wiring are in good working order, the system should be able to operate as normal.
Video Help for Nissan Radiator Fans
Nissan radiator issues can be pretty common and that is why I wanted to share this video with you. The Youtuber dial2fast has done a 6 minute video explaining why these issues are so common in Nissan’s. He takes apart a fan assembly to show failures. Some great information for your p1900 Nissan code error, click the red play button below to watch it.
Frequently Asked Questions
Is a Safety Recall Necessary for a Nissan Vehicle With the P1900 Code?
No, a safety recall is not necessary for a Nissan vehicle with the P1900 code. The code indicates an issue with the radiator cooling fan motor control, which can be fixed through regular maintenance or repair. Professional assistance is advised to ensure a safe and effective resolution.
Are There Any Other Potential Causes for the P1900 Nissan Code?
Yes, other potential causes for the P1900 Nissan Code include faulty radiator cooling fan motor relay, faulty radiator cooling fan motor, open/shorted radiator cooling fan motor harness, and poor electrical connection in the radiator cooling fan motor circuit.
Are There Any Preventive Measures That Can Be Taken to Avoid the P1900 Nissan Code?
To avoid the P1900 Nissan Code, regularly inspect the cooling fan motor and related components for any damage or wear and tear. Make sure all connections are secure and free from corrosion. Also, ensure that all factory service bulletins for your model of Nissan are up to date.
What Are the Estimated Costs Associated With a P1900 Nissan Code Repair?
The estimated costs associated with a P1900 Nissan Code repair typically range from $75 to $150 per hour. Labor costs and additional parts may also apply. It is important to be aware of these costs before attempting a repair.
Does the P1900 Nissan Code Require Any Special Tools or Equipment for Diagnosis and Repair?
No special tools or equipment are required for diagnosis and repair of the P1900 Nissan Code. The repair process typically involves checking the Possible Causes listed, visually inspecting the related wiring harness and connectors, and looking for broken, bent, pushed out, or corroded connector pins.
Final Thoughts
The P1900 Nissan code is an indication of a problem within the radiator cooling fan motor control circuit.
Diagnosis of this code requires a thorough understanding of the root cause of the issue, as well as the necessary steps to repair it.
Properly addressing the P1900 Nissan code is essential to ensure the safety of the vehicle and its optimal operation.
Cost of diagnosis and repair will depend on the severity of the issue, but should be done to ensure the safe operation of the vehicle.
