AutoCodes – Ford – P1479 2007 Ford Fusion

P1479 2007 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 2007 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 1,816

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 2007 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 2007 Ford Fusion - High Fan Control Primary Circuit - AutoCodes.com — P1479 2007 Ford Fusion Code - High Fan Control Primary Circuit

What does this mean?

What are the Possible Causes of the DTC P1479 2007 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 2007 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 2007 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 2007 Ford Fusion code?

Need more information on how to fix the P1479 2007 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 2007 Ford Fusion Code

What does the OBDII code P1479 mean for a 2007 Ford Fusion?

P1479 indicates a problem with the high-speed fan control primary circuit, meaning the cooling fan isn't operating correctly when high-speed operation is required.

What are the common symptoms of code P1479 in a 2007 Ford Fusion?

Symptoms may include engine overheating, the cooling fan not turning on at high speed, and possibly the check engine light illuminating.

What causes the P1479 code to appear in a 2007 Ford Fusion?

Common causes include a faulty cooling fan motor, a damaged fan control relay, corroded or broken wiring in the circuit, or a malfunctioning powertrain control module (PCM).

Can I drive my 2007 Ford Fusion with the P1479 code?

Driving with this code is not recommended, as the engine may overheat, which can lead to severe damage if the cooling fan isn't functioning properly.

How do I diagnose the P1479 code on a 2007 Ford Fusion?

Check the cooling fan operation, inspect the fan motor and relay, and test the wiring for continuity or damage. A scan tool can also help verify the code and monitor fan speed.

What is the role of the high-speed cooling fan in the 2007 Ford Fusion?

The high-speed cooling fan helps regulate engine temperature by increasing airflow through the radiator when the engine gets too hot, especially in high-demand scenarios like idling or during heavy loads.

How can I fix the P1479 code in my 2007 Ford Fusion?

Repairs may include replacing the cooling fan motor, replacing a faulty fan control relay, repairing damaged wiring, or reprogramming or replacing the PCM if necessary.

How much does it cost to fix the P1479 code on a 2007 Ford Fusion?

Repair costs vary but might range from $100 to $600, depending on whether the fan motor, relay, or other components need replacement.

Can a faulty PCM cause the P1479 code on a 2007 Ford Fusion?

Yes, while rare, a malfunctioning PCM can fail to send the proper signals to the fan control circuit, triggering the P1479 code.

Is the P1479 code related to other cooling system codes in the 2007 Ford Fusion?

Yes, it can be linked to other codes involving the cooling fan system, such as fan relay control or temperature sensor errors. It's crucial to address all related codes.