Engine-Codes - Ford - P1477 2002 Ford F150

P1477 2002 Ford F150 Code - Medium Cooling Fan Control Primary Circuit Failure

- Code Popularity: 1,999 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P1477 2002 Ford F150?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Cooling Fan Relay
  • Cooling Fan Relay harness is open or shorted
  • Cooling Fan Relay circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
⚠ Does your Ford have Safety Recalls? → Check here

How to Fix the DTC P1477 2002 Ford F150?

Check 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 pins.

Search for P1477 2002 Ford F150 Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1477 2002 Ford F150 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P1477 2002 Ford F150 Code Mean?

Monitors the medium fan control (MFC) primary circuit output from the Powertrain Control Module (PCM). The test fails if: With the MFC output commanded on (grounded), excessive current draw is detected on the MFC circuit; or with the MFC circuit commanded off, voltage is not detected on the MFC circuit (the PCM expects to detect IGN START/RUN voltage coming through the medium speed FC relay coil to the MFC circuit).

P1477 2002 Ford F150 Code - Medium Cooling Fan Control Primary Circuit Failure

Need more Information on the Code?

Need more information on how to fix the P1477 2002 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1477 2002 Ford F150 code diagnosed by a professional: Find a repair shop in your area