AutoCodes – Ford – P1479 Ford

P1479 Ford 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 Ford 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 29,387

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

What does this mean?

What are the Possible Causes of the DTC P1479 Ford?

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 Ford?

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 Ford 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 Ford code?

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Need Help with the Code?

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Information for Specific Ford Models

P1479 1997 Ford F150 — High Fan Control Primary Circuit
P1479 1998 Ford F150 — High Fan Control Primary Circuit
P1479 1999 Ford F150 — High Fan Control Primary Circuit
P1479 2000 Ford F150 — High Fan Control Primary Circuit
P1479 2001 Ford F150 — High Fan Control Primary Circuit
P1479 2002 Ford F150 — High Fan Control Primary Circuit
P1479 2003 Ford F150 — High Fan Control Primary Circuit
P1479 2006 Ford Fusion — High Fan Control Primary Circuit
P1479 2007 Ford Fusion — High Fan Control Primary Circuit
P1479 2008 Ford Fusion — High Fan Control Primary Circuit
P1479 2009 Ford Fusion — High Fan Control Primary Circuit
P1479 2010 Ford Fusion — High Fan Control Primary Circuit
P1479 2011 Ford Fusion — High Fan Control Primary Circuit
P1479 2012 Ford Fusion — High Fan Control Primary Circuit

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.