AutoCodesFord – P1674 2012 Ford Fusion

P1674 2012 Ford Fusion Code - Control Module Software Corrupted

Quick Answer

The Throttle Actuator Control (TAC) system is in the Failure Mode Effects Management (FMEM) mode of forced engine shutdown. Common causes include Software incompatibility issue, Damaged Powertrain Control Module (PCM). 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
P1674 2012 Ford Fusion indicates Control Module Software Corrupted .
Common causes
Common causes include Software incompatibility issue, Damaged Powertrain Control Module (PCM).
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 2,634
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 08, 2019
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Code P1674 2012 Ford Fusion Description

The Throttle Actuator Control (TAC) system is in the Failure Mode Effects Management (FMEM) mode of forced engine shutdown. Indicates an error occurred in the Powertrain Control Module (PCM). This code sets in combination with P2105.
OBDII Code P1674 2012 Ford Fusion - Control Module Software Corrupted  - AutoCodes.com
P1674 2012 Ford Fusion Code - Control Module Software Corrupted

What are the Possible Causes of the DTC P1674 2012 Ford Fusion?

  • Software incompatibility issue
  • Damaged Powertrain Control Module (PCM)

How to Fix the DTC P1674 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 P1674 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 P1674 2012 Ford Fusion code?

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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 P1674 2012 Ford Fusion Code

1. What does the OBDII code P1674 mean on a 2012 Ford Fusion?

The P1674 code indicates that the control module software is corrupted, which affects the vehicle's ability to perform certain functions properly.

2. What are the symptoms of the P1674 code on a 2012 Ford Fusion?

Common symptoms include the check engine light turning on, reduced engine performance, and possible difficulty starting the vehicle.

3. What causes the P1674 code to appear on a 2012 Ford Fusion?

Causes may include a failed software update, corrupted firmware, electrical issues like low battery voltage, or a malfunctioning control module.

4. Can a weak or dead battery trigger the P1674 code?

Yes, a weak or failing battery can cause voltage fluctuations that may corrupt the control module software and trigger the P1674 code.

5. How do you fix the P1674 code on a 2012 Ford Fusion?

The issue can often be resolved by reprogramming or updating the control module software, or in some cases, replacing the control module if it is damaged.

6. Can I still drive my 2012 Ford Fusion with the P1674 code?

Driving with the P1674 code is not recommended, as it can lead to further issues, reduced performance, or the vehicle failing to start.

7. How is the P1674 code diagnosed?

Diagnosis typically involves scanning the vehicle with a professional OBDII tool, checking for software updates, and inspecting the control module and electrical system for faults.

8. Does the P1674 code require control module replacement?

Not always. In many cases, reprogramming the module or addressing electrical issues can resolve the problem without needing a replacement.

9. How much does it cost to fix the P1674 code on a 2012 Ford Fusion?

The cost can vary based on the issue, ranging from $100–$300 for software reprogramming to $500–$1,500 if the control module requires replacement.

10. Can I fix the P1674 code on my own?

Fixing the P1674 code typically requires specialized equipment and expertise in control module software. It's best to have a certified technician handle it.

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