AutoCodes – Ford – P1479 2012 Ford Fusion

P1479 2012 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 2012 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 1,670

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 2012 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 2012 Ford Fusion - High Fan Control Primary Circuit - AutoCodes.com — P1479 2012 Ford Fusion Code - High Fan Control Primary Circuit

What does this mean?

What are the Possible Causes of the DTC P1479 2012 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 2012 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 2012 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 2012 Ford Fusion code?

Need more information on how to fix the P1479 2012 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the 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 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1479 in a 2012 Ford Fusion?

- Common symptoms include the engine overheating, the cooling fan running at high speed constantly, and the Check Engine light being illuminated.

2. What are the possible causes of OBDII code P1479 in a 2012 Ford Fusion?

- The primary causes can be a faulty cooling fan control module, a malfunctioning cooling fan relay, damaged wiring or connectors in the cooling fan circuit, or a problem with the engine coolant temperature sensor.

3. How can I diagnose the issue related to OBDII code P1479 in my 2012 Ford Fusion?

- Diagnosing the issue involves inspecting the cooling fan control module, checking the cooling fan relay, testing the wiring and connectors for any damage, and verifying the operation of the engine coolant temperature sensor.

4. Can I continue driving my 2012 Ford Fusion with OBDII code P1479 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to engine overheating and potential damage if the cooling fan is not functioning properly.

5. How can I repair OBDII code P1479 in my 2012 Ford Fusion?

- Repair options include replacing the cooling fan control module, replacing the cooling fan relay, repairing any damaged wiring or connectors, or replacing the engine coolant temperature sensor as needed.

6. Are there any DIY tips for addressing OBDII code P1479 in a 2012 Ford Fusion?

- DIY enthusiasts can start by checking the cooling fan fuse, inspecting the cooling fan operation, and visually inspecting the wiring and connectors for any obvious issues before seeking professional help.

7. Is it necessary to reset the OBDII system after repairing OBDII code P1479 in a 2012 Ford Fusion?

- Yes, it is recommended to clear the OBDII system after completing the repairs to see if the issue has been successfully resolved and to turn off the Check Engine light.

8. Can extreme weather conditions affect the occurrence of OBDII code P1479 in a 2012 Ford Fusion?

- Yes, extreme heat or cold can potentially impact the cooling system components and lead to issues with the cooling fan control circuit, resulting in the triggering of this fault code.

9. How long does it typically take to repair OBDII code P1479 in a 2012 Ford Fusion?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem related to this fault code.

10. Will OBDII code P1479 cause any long-term damage to my 2012 Ford Fusion if left unresolved?

- If left unresolved, OBDII code P1479 can potentially lead to engine overheating and subsequent damage, so it is important to address the issue promptly to prevent any long-term damage to the vehicle.