AutoCodes – Ford – P1479 2009 Ford Fusion

P1479 2009 Ford Fusion Code - High Fan Control Primary Circuit

Quick Answer

Monitors the High Fan Control (HFC) primary circuit output from the Powertrain Control Module (PCM). Common causes include Faulty Cooling Fan, Cooling Fan harness is open or shorted, Cooling Fan circuit poor electrical connection. 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 Cooling Fan, Cooling Fan harness is open or shorted, Cooling Fan circuit poor electrical connection.
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 1,700

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1479 2009 Ford Fusion Description

Monitors the High Fan Control (HFC) primary circuit output from the Powertrain Control Module (PCM). The test fails if the HFC output commanded on (grounded), excessive current draw is detected on the HFC circuit or, with the HFC circuit commanded off, voltage is not detected on the HFC circuit (the PCM expects to detect VPWR voltage through the high speed FC relay coil to the HFC circuit).

OBDII Code P1479 2009 Ford Fusion - High Fan Control Primary Circuit - AutoCodes.com — P1479 2009 Ford Fusion Code - High Fan Control Primary Circuit

What does this mean?

What are the Possible Causes of the DTC P1479 2009 Ford Fusion?

Faulty Cooling Fan
Cooling Fan harness is open or shorted
Cooling Fan circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1479 2009 Ford Fusion?

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 P1479 2009 Ford Fusion 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.

Need more information about the P1479 2009 Ford Fusion code?

Need more information on how to fix the P1479 2009 Ford Fusion 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 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.