Engine-CodesFord – P1479 2009 Ford Fusion

P1479 2009 Ford Fusion Code - High Fan Control Primary Circuit

Quick Answer

The P1479 diagnostic trouble code (DTC) for a 2009 Ford Fusion refers to a problem with the High Fan Control Primary Circuit. Common causes include Faulty fan control module, Defective high-speed fan, Damaged wiring or connectors. 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
P1479 2009 Ford Fusion indicates High Fan Control Primary Circuit.
Common causes
Common causes include Faulty fan control module, Defective high-speed fan, Damaged wiring or connectors.
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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1479 2009 Ford Fusion Description

The P1479 diagnostic trouble code (DTC) for a 2009 Ford Fusion refers to a problem with the High Fan Control Primary Circuit. This code indicates that there is an issue with the primary circuit that controls the high-speed fan in the vehicle's cooling system. The high-speed fan is responsible for increasing airflow through the radiator when the engine temperature rises above a certain threshold.

OBDII Code P1479 2009 Ford Fusion - High Fan Control Primary Circuit
P1479 2009 Ford Fusion Code - High Fan Control Primary Circuit

Common Causes of P1479 2009 Ford Fusion

  1. Faulty fan control module
  2. Defective high-speed fan
  3. Damaged wiring or connectors
  4. Blown fuses related to the fan circuit
  5. Failed relays controlling the high-speed fan

Symptoms of P1479 2009 Ford Fusion

  1. Engine overheating
  2. Reduced air conditioning performance
  3. Check Engine Light illuminated
  4. High engine temperature gauge readings
  5. Loss of engine power

How to Fix P1479 2009 Ford Fusion

  1. Diagnose the issue by using a scan tool to retrieve the DTC and inspect the fan control module, wiring, relays, and high-speed fan.
  2. Test the high-speed fan to ensure it is functioning properly.
  3. Check the wiring and connectors for any signs of damage or corrosion and repair or replace as needed.
  4. Replace the fan control module if it is found to be faulty.
  5. Reset the DTC and test the vehicle to ensure the issue has been resolved.

Cost to Fix P1479 2009 Ford Fusion

The typical repair costs for addressing a P1479 code on a 2009 Ford Fusion can range from $200 to $500, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check local rates for a more accurate estimate.

When is the Code Detected?

The Powertrain Control Module (PCM) enables high cooling fan and detects an open or shorted circuit

Need more information about the P1479 2009 Ford Fusion code?

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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 P1479 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P1479 in a 2009 Ford Fusion?

The common symptoms of code P1479 in a 2009 Ford Fusion include the cooling fan running at a high speed constantly, even when the engine is not overheating.

2. What is the primary cause of OBDII code P1479 in a 2009 Ford Fusion?

The primary cause of code P1479 in a 2009 Ford Fusion is a malfunction in the high fan control primary circuit, which may be due to a faulty cooling fan control module or a wiring issue.

3. How can I diagnose the high fan control primary circuit issue causing OBDII code P1479 in my 2009 Ford Fusion?

To diagnose the issue, you can use a diagnostic scanner to retrieve the trouble codes, visually inspect the cooling fan control module and wiring for any visible damage, and perform a continuity test on the circuit.

4. Can I continue driving my 2009 Ford Fusion with OBDII code P1479 triggered?

It is not recommended to continue driving your 2009 Ford Fusion with code P1479 triggered, as it can lead to overheating and potential damage to the engine components.

5. How can I repair OBDII code P1479 in a 2009 Ford Fusion?

To repair code P1479 in a 2009 Ford Fusion, you may need to replace the cooling fan control module, repair any damaged wiring, or reset the code after fixing the underlying issue causing the high fan control primary circuit malfunction.

6. Are there any DIY tips for fixing OBDII code P1479 in my 2009 Ford Fusion?

While some basic troubleshooting steps can be done, it is recommended to consult a professional mechanic for accurate diagnosis and repair of code P1479 in a 2009 Ford Fusion due to the complexity of the cooling fan control system.

7. Will resetting the OBDII code P1479 in my 2009 Ford Fusion make the issue go away permanently?

Resetting the code may clear the warning light temporarily, but if the underlying issue causing code P1479 is not addressed, the problem is likely to reoccur.

8. Is OBDII code P1479 in a 2009 Ford Fusion a serious issue?

Code P1479 indicating a high fan control primary circuit malfunction in a 2009 Ford Fusion should be addressed promptly to prevent potential overheating and engine damage, making it a serious issue that requires attention.

9. Can extreme weather conditions affect the occurrence of OBDII code P1479 in a 2009 Ford Fusion?

Extreme weather conditions such as high temperatures can put additional strain on the cooling system, potentially triggering code P1479 in a 2009 Ford Fusion if there are preexisting issues with the high fan control primary circuit.

10. How much does it typically cost to repair OBDII code P1479 in a 2009 Ford Fusion?

The cost of repairing code P1479 in a 2009 Ford Fusion can vary depending on the extent of the issue, parts needed for replacement, and labor costs, but it is advisable to get a few quotes from different mechanics or repair shops for an accurate estimate.

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