Engine-CodesFord – P0355 2008 Ford Fusion

P0355 2008 Ford Fusion Code - Ignition Coil 'E' Primary/Secondary Circuit

Quick Answer

The P0355 code for a 2008 Ford Fusion indicates a problem with the ignition coil 'E' primary/secondary circuit. Common causes include Faulty ignition coil 'E', Damaged or corroded wiring or connectors, 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
P0355 2008 Ford Fusion indicates Ignition Coil 'E' Primary/Secondary Circuit .
Common causes
Common causes include Faulty ignition coil 'E', Damaged or corroded wiring or connectors, 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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0355 2008 Ford Fusion Description

The P0355 code for a 2008 Ford Fusion indicates a problem with the ignition coil 'E' primary/secondary circuit. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine cylinders. The primary circuit controls the power supply to the coil, while the secondary circuit is responsible for delivering the high voltage spark to the spark plugs.

OBDII Code P0355 2008 Ford Fusion - Ignition Coil 'E' Primary/Secondary Circuit
P0355 2008 Ford Fusion Code - Ignition Coil 'E' Primary/Secondary Circuit

Common Causes of P0355 2008 Ford Fusion

  1. Faulty ignition coil 'E'
  2. Damaged or corroded wiring or connectors
  3. Issues with the ECM
  4. Poor electrical connection
  5. Environmental factors such as moisture or heat affecting the ignition system

Symptoms of P0355 2008 Ford Fusion

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

How to Fix P0355 2008 Ford Fusion

  1. Diagnose the specific cause of the issue using a scan tool to confirm the P0355 code.
  2. Inspect the ignition coil 'E' for any signs of damage or wear.
  3. Check the wiring and connectors for any breaks, corrosion, or loose connections.
  4. Test the ECM to ensure it is functioning correctly.
  5. Replace the faulty ignition coil 'E', repair any damaged wiring or connectors, and clear the code from the ECM.

Cost to Fix P0355 2008 Ford Fusion

The typical repair costs for addressing the P0355 code on a 2008 Ford Fusion can range from $150 to $300, including parts and labor. However, it's important to note that 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's recommended to check local rates for a more accurate 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 P0355 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0355 in a 2008 Ford Fusion?

The common symptoms include engine misfires, rough idling, loss of power, and illuminated Check Engine Light.

2. What does the OBDII code P0355 for a 2008 Ford Fusion indicate?

The code P0355 specifically refers to a problem in the ignition coil 'E' primary/secondary circuit.

3. What are the possible causes of OBDII code P0355 in a 2008 Ford Fusion?

Potential 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 issue causing OBDII code P0355 in my 2008 Ford Fusion?

You can start by visually inspecting the ignition coil and its wiring for any signs of damage. Using a multimeter, you can test the continuity of the circuit and check for proper voltage.

5. Can I still drive my 2008 Ford Fusion with OBDII code P0355?

It is not recommended to drive the vehicle with a persistent ignition coil issue as it can lead to further damage to the engine components.

6. How can I repair OBDII code P0355 in a 2008 Ford Fusion?

To repair this code, you may need to replace the faulty ignition coil, repair any damaged wiring, or address any issues with the PCM as necessary.

7. Are there any preventative maintenance tips to avoid OBDII code P0355 in a 2008 Ford Fusion?

Regularly inspecting and maintaining the ignition system, including the coils and wiring, can help prevent issues that may trigger code P0355.

8. Will resetting the OBDII code P0355 in my 2008 Ford Fusion make it go away permanently?

Resetting the code without addressing the underlying issue will only temporarily turn off the Check Engine Light. The problem will likely reoccur until properly diagnosed and fixed.

9. Can a DIY enthusiast fix OBDII code P0355 in a 2008 Ford Fusion?

Depending on your skill level and access to tools, you may be able to diagnose and replace the faulty ignition coil yourself. However, if you are unsure, it's best to consult a professional mechanic.

10. How much does it typically cost to repair OBDII code P0355 in a 2008 Ford Fusion at a repair shop?

The cost of repairing code P0355 can vary based on the specific issue, parts needed, and labor rates. In general, expect to pay anywhere from $100 to $300 for parts and labor.

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