AutoCodes – Ford – P0354 2012 Ford Fusion

P0354 2012 Ford Fusion Code - Ignition Coil 'D' Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 4, Ignition Coil 4 harness is open or shorted, Ignition Coil 4 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: P0354 2012 Ford Fusion indicates Ignition Coil 'D' Primary/Secondary Circuit .
Common causes: Common causes include Faulty Ignition Coil 4, Ignition Coil 4 harness is open or shorted, Ignition Coil 4 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 3,668

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0354 2012 Ford Fusion Description

The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

OBDII Code P0354 2012 Ford Fusion - Ignition Coil 'D' Primary/Secondary Circuit - AutoCodes.com — P0354 2012 Ford Fusion Code - Ignition Coil 'D' Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0354 2012 Ford Fusion?

Faulty Ignition Coil 4
Ignition Coil 4 harness is open or shorted
Ignition Coil 4 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0354 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 P0354 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 P0354 2012 Ford Fusion code?

Need more information on how to fix the P0354 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 P0354 2012 Ford Fusion Code

1. What does OBDII code P0354 mean for a 2012 Ford Fusion?

This code indicates a problem with the ignition coil 'D' primary/secondary circuit in the vehicle's ignition system.

2. What are the common symptoms of OBDII code P0354 in a 2012 Ford Fusion?

Common symptoms include engine misfires, rough idling, lack of power, and illuminated Check Engine Light.

3. What are the possible causes of OBDII code P0354 in a 2012 Ford Fusion?

Potential causes include a faulty ignition coil 'D', damaged wiring or connectors in the ignition coil circuit, or issues with the Engine Control Module (ECM).

4. How can I diagnose OBDII code P0354 in my 2012 Ford Fusion?

Diagnosis typically involves checking the ignition coil 'D' for proper functioning, inspecting the wiring and connectors for any damage, and using a scan tool to analyze the ECM data.

5. Can I still drive my 2012 Ford Fusion with OBDII code P0354?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage or poor performance.

6. How do I repair OBDII code P0354 in my 2012 Ford Fusion?

Repair may involve replacing the faulty ignition coil 'D', repairing or replacing damaged wiring/connectors, or resetting the ECM after addressing the issue.

7. Are there any tips for preventing OBDII code P0354 in my 2012 Ford Fusion?

Regular maintenance, such as checking and replacing ignition components as needed, can help prevent issues leading to this code.

8. Is it possible to reset OBDII code P0354 in a 2012 Ford Fusion without repairs?

While clearing the code may temporarily turn off the Check Engine Light, it is important to address the underlying issue to prevent future problems.

9. Does OBDII code P0354 affect fuel economy in a 2012 Ford Fusion?

Yes, this code can impact fuel economy due to engine misfires and inefficient combustion caused by ignition system issues.

10. Can a DIY enthusiast repair OBDII code P0354 in a 2012 Ford Fusion?

Depending on the skill level and tools available, DIY enthusiasts may be able to replace the ignition coil 'D' or perform basic wiring checks, but complex diagnostics may require professional assistance.