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Engine-Codes – Ford – P0351 2012 Ford Fusion

P0351 2012 Ford Fusion Code - Ignition Coil 'A' Primary/Secondary Circuit

Quick Answer

The P0351 diagnostic trouble code (DTC) for a 2012 Ford Fusion indicates a problem with the ignition coil 'A' primary/secondary circuit. Common causes include Faulty ignition coil 'A', Damaged or corroded wiring in the ignition coil circuit, Issues with the ECM. 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
P0351 2012 Ford Fusion indicates Ignition Coil 'A' Primary/Secondary Circuit .
Common causes
Common causes include Faulty ignition coil 'A', Damaged or corroded wiring in the ignition coil circuit, Issues with the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0351 2012 Ford Fusion Description

The P0351 diagnostic trouble code (DTC) for a 2012 Ford Fusion indicates a problem with the ignition coil 'A' primary/secondary circuit. The ignition coil is a crucial component in the ignition system of a vehicle, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the engine cylinders. The primary circuit controls the power supply to the ignition coil, while the secondary circuit is responsible for delivering the high voltage spark to the spark plugs.

OBDII Code P0351 2012 Ford Fusion - Ignition Coil 'A' Primary/Secondary Circuit
P0351 2012 Ford Fusion Code - Ignition Coil 'A' Primary/Secondary Circuit

Common Causes of P0351 2012 Ford Fusion

  1. Faulty ignition coil 'A'
  2. Damaged or corroded wiring in the ignition coil circuit
  3. Issues with the ECM
  4. Defective spark plugs or spark plug wires
  5. Poor electrical connection in the ignition system

Symptoms of P0351 2012 Ford Fusion

  1. Engine misfires
  2. Rough idling
  3. Decreased fuel efficiency
  4. Difficulty starting the engine
  5. Illumination of the Check Engine Light

How to Fix P0351 2012 Ford Fusion

  1. Diagnose the specific cause of the issue by using a scan tool to retrieve the DTC and inspecting the ignition coil, wiring, and related components.
  2. Replace the faulty ignition coil 'A' if it is determined to be the root cause of the problem.
  3. Repair or replace any damaged or corroded wiring in the ignition coil circuit.
  4. Check and replace the spark plugs and spark plug wires if necessary.
  5. Clear the DTC from the ECM's memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0351 2012 Ford Fusion

The typical repair costs for addressing the P0351 code on a 2012 Ford Fusion can range from $150 to $300, including parts and labor. However, it is essential to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate.

When is the Code Detected?

Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil.

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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 P0351 2012 Ford Fusion Code

1. What does OBDII code P0351 for a 2012 Ford Fusion indicate?

- OBDII code P0351 in a 2012 Ford Fusion specifically points to an issue with the Ignition Coil 'A' Primary/Secondary Circuit.

2. What are the common symptoms of OBDII code P0351 in a 2012 Ford Fusion?

- Common symptoms include engine misfires, rough idling, lack of power, and potential stalling of the vehicle.

3. What are the possible causes of OBDII code P0351 in a 2012 Ford Fusion?

- The causes can be a faulty ignition coil 'A', damaged wiring or connectors related to the ignition system, or issues with the Engine Control Module (ECM).

4. How can I diagnose the issue related to OBDII code P0351 in a 2012 Ford Fusion?

- Diagnosing the problem may involve checking the condition of the ignition coil 'A', inspecting the wiring and connectors for any damage, and using a scan tool to gather data from the ECM.

5. Can I still drive my 2012 Ford Fusion with OBDII code P0351?

- It is not recommended to drive the vehicle with code P0351 as it can lead to further damage and potential safety risks. It's best to address the issue promptly.

6. How can I repair OBDII code P0351 in my 2012 Ford Fusion?

- Repairing the issue may involve replacing the faulty ignition coil 'A', repairing or replacing damaged wiring or connectors, and clearing the trouble code with a scan tool.

7. Are there any tips to prevent OBDII code P0351 from occurring in my 2012 Ford Fusion?

- Regularly maintaining your vehicle, including checking the ignition system components, can help prevent issues like code P0351. Also, addressing any engine performance problems promptly can reduce the risk of this code occurring.

8. What is the typical cost to repair OBDII code P0351 in a 2012 Ford Fusion?

- The cost can vary depending on the exact cause of the issue, but replacing an ignition coil 'A' can range from $100 to $300, including parts and labor.

9. Can I reset the OBDII code P0351 in my 2012 Ford Fusion on my own?

- You can clear the trouble code using an OBDII scan tool, but it's essential to address the underlying issue causing the code before resetting it to prevent it from reoccurring.

10. How serious is OBDII code P0351 in a 2012 Ford Fusion?

- While the vehicle may still be operable with this code, it's crucial to address it promptly to prevent potential engine damage or safety hazards. Ignoring the issue can lead to more significant problems over time.

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