AutoCodes – Ford – P1477 2012 Ford Fusion

P1477 2012 Ford Fusion Code - Medium Cooling Fan Control Primary Circuit Failure

Quick Answer

Monitors the medium fan control (MFC) primary circuit output from the Powertrain Control Module (PCM). Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay 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: P1477 2012 Ford Fusion indicates Medium Cooling Fan Control Primary Circuit Failure.
Common causes: Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay 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 1,618

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 P1477 2012 Ford Fusion Description

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).

OBDII Code P1477 2012 Ford Fusion - Medium Cooling Fan Control Primary Circuit Failure - AutoCodes.com — P1477 2012 Ford Fusion Code - Medium Cooling Fan Control Primary Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P1477 2012 Ford Fusion?

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

How to Fix the DTC P1477 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 P1477 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 P1477 2012 Ford Fusion code?

Need more information on how to fix the P1477 2012 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 P1477 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1477 in a 2012 Ford Fusion?

The common symptoms of OBDII code P1477 in a 2012 Ford Fusion include overheating engine, constant or intermittent cooling fan operation, and potential engine performance issues.

2. What does the OBDII code P1477 in a 2012 Ford Fusion indicate?

The OBDII code P1477 in a 2012 Ford Fusion indicates a Medium Cooling Fan Control Primary Circuit Failure, meaning there is a malfunction in the primary circuit that controls the medium cooling fan.

3. What are the possible causes of OBDII code P1477 in a 2012 Ford Fusion?

Possible causes of OBDII code P1477 in a 2012 Ford Fusion include a faulty cooling fan relay, damaged wiring or connectors in the cooling fan circuit, a defective cooling fan motor, or a problem with the engine control module (ECM).

4. How can I diagnose OBDII code P1477 in my 2012 Ford Fusion?

To diagnose OBDII code P1477 in a 2012 Ford Fusion, you can start by checking the cooling fan relay, inspecting the wiring and connectors for any damage, testing the cooling fan motor, and scanning the ECM for any related fault codes.

5. How can I repair OBDII code P1477 in my 2012 Ford Fusion?

To repair OBDII code P1477 in a 2012 Ford Fusion, you may need to replace the cooling fan relay, repair any damaged wiring or connectors, replace the cooling fan motor if necessary, or reprogram the ECM if it is identified as the source of the issue.

6. Can I continue driving my 2012 Ford Fusion with OBDII code P1477?

It is not recommended to continue driving your 2012 Ford Fusion with OBDII code P1477, as it can lead to engine overheating and potential damage. It is best to address the issue promptly to avoid further complications.

7. How much does it typically cost to fix OBDII code P1477 in a 2012 Ford Fusion?

The cost to fix OBDII code P1477 in a 2012 Ford Fusion can vary depending on the exact cause of the issue and the repair needed. Costs may include parts and labor, with an average range of $100 to $500.

8. Is OBDII code P1477 a common issue in 2012 Ford Fusion vehicles?

OBDII code P1477, indicating a Medium Cooling Fan Control Primary Circuit Failure, is not extremely common in 2012 Ford Fusion vehicles, but it can occur due to various factors such as wear and tear on components or electrical issues.

9. Can a DIY enthusiast fix OBDII code P1477 in a 2012 Ford Fusion?

A DIY enthusiast with automotive repair experience and the necessary tools can potentially fix OBDII code P1477 in a 2012 Ford Fusion by diagnosing the issue and replacing or repairing the faulty components themselves.

10. How can I prevent OBDII code P1477 from occurring in my 2012 Ford Fusion?

To prevent OBDII code P1477 from occurring in your 2012 Ford Fusion, it is important to regularly maintain the cooling system, check for any signs of overheating or cooling fan malfunctions, and address any issues promptly to avoid potential failures.