AutoCodes – Ford – P1674 2009 Ford Fusion

P1674 2009 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 2009 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 2,896

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 Sep 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1674 2009 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 2009 Ford Fusion - Control Module Software Corrupted - AutoCodes.com — P1674 2009 Ford Fusion Code - Control Module Software Corrupted

What does this mean?

What are the Possible Causes of the DTC P1674 2009 Ford Fusion?

Software incompatibility issue
Damaged Powertrain Control Module (PCM)

How to Fix the DTC P1674 2009 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 2009 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.

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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 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P1674 in a 2009 Ford Fusion?

- Common symptoms include engine stalling, rough idle, poor acceleration, and potential difficulty starting the vehicle.

2. What does the OBDII code P1674 in a 2009 Ford Fusion mean?

- This code indicates that the control module software has become corrupted, leading to potential issues with the engine's performance.

3. What are the possible causes of the control module software becoming corrupted in a 2009 Ford Fusion?

- Possible causes include electrical issues, software glitches, faulty wiring, or a problem with the control module itself.

4. How can I diagnose the control module software corruption in my 2009 Ford Fusion?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, examining the wiring connections, and checking for any other related codes.

5. Can I still drive my 2009 Ford Fusion with OBDII code P1674?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential engine performance issues and further damage if left unresolved.

6. How can I repair OBDII code P1674 in my 2009 Ford Fusion?

- Repair options include updating the control module software, checking and repairing any faulty wiring connections, or replacing the control module if necessary.

7. Is it possible to reset the OBDII code P1674 in a 2009 Ford Fusion without fixing the underlying issue?

- Resetting the code without addressing the root cause may temporarily clear the check engine light, but the issue will likely reoccur until properly repaired.

8. Can a DIY enthusiast fix OBDII code P1674 in a 2009 Ford Fusion?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides or seeking assistance from forums.

9. How much does it typically cost to repair OBDII code P1674 in a 2009 Ford Fusion at a mechanic?

- Repair costs can vary depending on the specific cause of the issue, but they may range from $100 to $500 or more, including parts and labor.

10. Are there any preventive measures to avoid OBDII code P1674 in a 2009 Ford Fusion?

- Regular maintenance, avoiding electrical system overloads, and promptly addressing any related warning signs can help prevent control module software corruption and associated issues.