Engine-Codes - Ford - P1479 2003 FORD F150

P1479 2003 FORD F150 - High Fan Control Primary Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1479 2003 FORD F150 Possible Causes

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

How is the P1479 2003 FORD F150 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1479 2003 FORD F150 code

Labor: 1.0

The cost to diagnose the P1479 2003 FORD F150 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?

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

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1479 2003 FORD F150 Meaning

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).

More Information

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