2019 Nissan NV1500 Radiator Fan Isn't Working

Diagnosing the Causes of a Non-Functioning Radiator Fan in Your 2019 Nissan NV1500 and How to Fix It

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
34% chance it's the
Fan Motor or Clutch
0%
28% chance it's the
Fan Relay or Fuse
0%
23% chance it's the
Temp Sensor or Fan Control Module
0%
15% chance it's
Something else
The most common reasons a 2019 Nissan NV1500 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor.
  • Fan Motor or Clutch: A faulty fan motor or a malfunctioning fan clutch can result in inadequate cooling, causing the engine to overheat.
  • Fan Relay or Fuse: A faulty fan relay or blown fuse can prevent the cooling fan from operating, leading to engine overheating.
  • Temp Sensor or Fan Control Module: A faulty temperature sensor or fan control module can result in incorrect readings, causing the engine to overheat or the cooling fan to operate improperly.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2019 Nissan NV1500 radiator fan isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Over time serpentine belts stretch, crack, and the ribs that ride on the accessory pulleys being to wear smooth. A squealing noise that increases with engine speed or as engine driven accessories are turned on may be noted. The noise is caused by the belt slipping on the pulleys, insufficiently driving them. Ineffective air conditioning, a battery warning light, or intermittent power steering assist can result from this.

»MORE: Symptoms of a bad serpentine belt

The first indication of a defective fan clutch is a healthy cooling system that runs below or above the normal temperature range. This is due to the fan running too fast or too slow. Also, a seized cooling fan will cause a loud roaring fan noise from under the hood every time the accelerator is pressed, and the engine will feel as if it lacks power. In this situation it would be very difficult to turn the engine cooling fan by hand, of course when the vehicle is off. Finally, if the clutch fails the fan will either turn very slowly, and not respond well to engine speed.

The bad thermostat can cause two different sets of problems, depending on whether it's stuck open or stuck closed.

A thermostat that is stuck open can cause the engine to run colder than normal and turn on the check engine light. It may also cause poor fuel mileage and the heater to blow cool air.

A thermostat that is stuck closed will cause the vehicle to overheat. If a new thermostat doesn't resolve engine temperature problems, the cooling system needs to be checked for other issues.

» LEARN MORE: Signs of a bad thermostat, and how to fix it

When the engine coolant temperature sensor fails, it will send inaccurate information to the vehicle’s computer, causing the computer to react to false operating conditions. This will cause the engine to consume more fuel than normal, depleting fuel mileage, and causing black, sooty smoke from the engine under moderate to heavy acceleration. The check engine light will illuminate, and on-board diagnostic trouble codes may be stored for exhaust and emission system failure, fuel delivery system failure, and engine cooling system failure. Overheating may also occur, as the coolant sensor may be leaking fluid out of the engine, creating a an air pocket in the system.

What steps should I take to diagnose the non-functioning radiator fan in my 2019 Nissan NV1500?

To effectively diagnose the non-functioning radiator fan in your 2019 Nissan NV1500, begin with the simplest solutions before progressing to more complex diagnostics. Start by checking the fuse associated with the radiator fan, as a blown fuse is a common and easily fixable issue. If the fuse is intact, move on to inspect the relay, which controls the power to the fan; testing or replacing a faulty relay can restore functionality. Next, test the fan motor by applying direct power to it; if it fails to operate, the motor may need replacement. Additionally, verify the temperature sensor, as it plays a crucial role in signaling the fan to activate when the engine reaches a specific temperature. Don’t overlook the wiring connected to the fan; look for any signs of damage, loose connections, or corrosion that could impede performance. Finally, ensure that coolant levels are adequate, as low coolant can lead to overheating and affect the fan's operation. By following this structured approach, you can systematically identify and resolve the issue with your radiator fan.

What are the common causes for the radiator fan not working in a 2019 Nissan NV1500?

When troubleshooting a non-functioning radiator fan in a 2019 Nissan NV1500, it's essential to consider several common problems that could be at play. A faulty fan motor is often the primary suspect, as it directly impacts the fan's ability to cool the radiator. Additionally, a blown fuse can interrupt the power supply to the fan, rendering it inoperative. Another critical component to check is the relay, which is responsible for sending power to the fan motor; if this relay fails, the fan will not operate. The coolant temperature sensor also plays a vital role, as it signals when the fan should engage; a malfunctioning sensor may fail to trigger the fan when needed. Furthermore, wiring issues, such as damaged or corroded connections, can disrupt the electrical flow to the fan. Lastly, the cooling fan module, which controls the fan's operation, may also be defective, preventing the fan from turning on. By understanding these common causes, DIYers can effectively diagnose and address the issues with their radiator fan, ensuring their vehicle remains in optimal working condition.

How urgent is it to repair the non-functioning radiator fan in a 2019 Nissan NV1500?

Repairing the non-functioning radiator fan in your 2019 Nissan NV1500 is an urgent matter that should not be overlooked. The radiator fan is essential for maintaining optimal engine temperature by effectively dissipating heat generated during operation. When this fan fails, the risk of overheating increases dramatically, which can lead to severe engine damage, including warped cylinder heads and blown head gaskets. Such issues not only compromise the vehicle's performance but can also result in costly repairs or even a complete engine replacement. Therefore, addressing the malfunction promptly is crucial to safeguard your vehicle's longevity and ensure safe driving conditions. Ignoring the problem could lead to a breakdown or more extensive damage, making it imperative to prioritize this repair to maintain the reliability and efficiency of your Nissan NV1500.

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2019 Nissan NV1500 Radiator Fan Not Working | RepairPal