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

Quick Answer

The P0354 Ford diagnostic trouble code indicates a problem with the ignition coil 'D' primary/secondary circuit. Common causes include Faulty ignition coil 'D', Wiring harness issues, Loose or corroded connections. 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 Ford indicates Ignition Coil 'D' Primary/Secondary Circuit .
Common causes
Common causes include Faulty ignition coil 'D', Wiring harness issues, Loose or corroded connections.
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 Aug 30, 2024
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Code P0354 Ford Description

The P0354 Ford diagnostic trouble code indicates a problem with the ignition coil 'D' primary/secondary circuit. The ignition coil is responsible for converting the low voltage power from the battery into the high voltage power needed to create a spark in the spark plugs. This spark is crucial for igniting the air-fuel mixture in the engine cylinders, which powers the vehicle. When there is an issue with the ignition coil circuit, it can lead to misfiring, rough idling, poor fuel efficiency, and even engine stalling.

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

Common Causes of P0354 Ford

  1. Faulty ignition coil 'D'
  2. Wiring harness issues
  3. Loose or corroded connections
  4. PCM (Powertrain Control Module) failure
  5. Spark plug issues

Symptoms of P0354 Ford

  1. Misfiring engine
  2. Rough idle
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P0354 Ford

  1. Diagnose the specific cause of the issue using a scan tool to pinpoint the faulty component.
  2. Inspect the ignition coil 'D' for any signs of damage or wear.
  3. Check the wiring harness and connections for any looseness or corrosion, repairing or replacing as necessary.
  4. Test the PCM to ensure it is functioning correctly.
  5. Replace the faulty ignition coil 'D' and clear the trouble code from the vehicle's computer.

Cost to Fix P0354 Ford

The cost of repairing the ignition coil 'D' primary/secondary circuit can vary depending on the make and model of the vehicle, the location of the repair, and the specific cause of the issue. On average, the cost for parts can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost can be estimated to be between $150 and $500. It is recommended to consult with a local auto repair shop for a more accurate estimate based on your specific circumstances.

What does this mean?

Tech Notes for P0354 Ford

Ford Ignition Coil Primary Codes P0351-P0360 Diagnostic Walk through





User Submitted Video

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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Information for Specific Ford Models

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 Ford Code

1. What are the common symptoms of OBDII code P0354 in a Ford vehicle?

- Common symptoms include engine misfires, rough idling, poor acceleration, and an illuminated check engine light.

2. What does the OBDII code P0354 for a Ford vehicle indicate?

- This code indicates a problem with the Ignition Coil 'D' Primary/Secondary Circuit in the vehicle's ignition system.

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

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the PCM (Powertrain Control Module).

4. How can I diagnose the Ignition Coil 'D' Primary/Secondary Circuit issue related to OBDII code P0354 in my Ford?

- Use a multimeter to test the resistance of the ignition coil, check for damaged wires or connectors, and perform a thorough visual inspection of the ignition system components.

5. Can a bad spark plug cause OBDII code P0354 to trigger in a Ford vehicle?

- Yes, a faulty spark plug can lead to misfires and trigger the P0354 code. It's recommended to inspect and replace spark plugs if necessary when dealing with this code.

6. Should I replace all ignition coils if OBDII code P0354 is detected in my Ford?

- It's not necessary to replace all ignition coils, but it's recommended to inspect and test each coil to identify the specific one causing the issue before replacing it.

7. Are there any DIY repair tips for fixing OBDII code P0354 in a Ford vehicle?

- DIY repair tips include checking and cleaning the connectors, testing the ignition coil resistance, and ensuring proper grounding of the ignition system components.

8. Can driving with OBDII code P0354 present cause further damage to my Ford vehicle?

- Continuing to drive with this code present can potentially lead to more severe engine issues, reduced fuel efficiency, and damage to other ignition system components.

9. How much does it typically cost to repair OBDII code P0354 in a Ford vehicle?

- The cost of repairing this code can vary depending on the root cause, but it may range from $100 to $300 for parts and labor.

10. Is it safe to clear the OBDII code P0354 and ignore the issue in my Ford vehicle?

- Clearing the code without addressing the underlying problem is not recommended, as it may lead to ongoing engine performance issues and potential safety hazards.

Discuss the causes and fixes for P0354 Ford OBDII Code

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  • It's very hard to find similar data for the Ford Edge. Comparisons aren't working for me, and trying to use a Fusion or F-150 tutorial may get me into trouble. Guess I'll have to go to the repair shop. Always high prices, long waits, and non-thorough service. (in my colluded area)

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