AutoCodes – Ford – P0355 2012 Ford Fusion

P0355 2012 Ford Fusion Code - Ignition Coil 'E' Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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
P0355 2012 Ford Fusion indicates Ignition Coil 'E' Primary/Secondary Circuit .
Common causes
Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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 3,604
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0355 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 P0355 2012 Ford Fusion - Ignition Coil 'E' Primary/Secondary Circuit  - AutoCodes.com
P0355 2012 Ford Fusion Code - Ignition Coil 'E' Primary/Secondary Circuit

What are the Possible Causes of the DTC P0355 2012 Ford Fusion?

  • Faulty Ignition Coil 5
  • Ignition Coil 5 harness is open or shorted
  • Ignition Coil 5 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0355 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 P0355 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 P0355 2012 Ford Fusion code?

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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 2012 Ford Fusion Code

What does OBDII code P0355 mean in a 2012 Ford Fusion?

P0355 indicates an issue with the Ignition Coil 'E' Primary/Secondary Circuit, which may involve a malfunction in the ignition coil, wiring, or ECM/PCM.

What are the symptoms of code P0355 in a 2012 Ford Fusion?

Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.

What causes code P0355 in a 2012 Ford Fusion?

Common causes include a faulty ignition coil, damaged wiring or connectors in the Ignition Coil 'E' circuit, or a malfunctioning PCM.

How do I identify Ignition Coil 'E' in my 2012 Ford Fusion?

Ignition Coil 'E' typically corresponds to cylinder 5 in the firing order. Refer to your vehicle's service manual for the exact location.

Can a bad spark plug cause code P0355?

Yes, a worn or damaged spark plug in cylinder 5 can cause stress on the ignition coil, potentially triggering the code.

How do I fix code P0355 in a 2012 Ford Fusion?

Start by inspecting and replacing the ignition coil for cylinder 5 if faulty. Check the wiring and connectors for damage, and repair or replace as needed.

Can I drive my 2012 Ford Fusion with code P0355?

Driving with code P0355 is not recommended, as it can lead to further engine damage, poor performance, and unsafe driving conditions.

How much does it cost to repair code P0355 in a 2012 Ford Fusion?

The cost varies depending on the issue. Replacing an ignition coil typically costs $100-$300, including parts and labor, while wiring repairs may cost more.

Will clearing the code fix the problem?

Clearing the code will turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.

Can a bad PCM cause code P0355?

Yes, though it is less common, a malfunctioning PCM can fail to properly control the Ignition Coil 'E' circuit, triggering the code.

Discuss the causes and fixes for P0355 2012 Ford Fusion OBDII Code

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