P0355 2012 Ford Fusion Code - Ignition Coil 'E' Primary/Secondary Circuit
Quick Answer
The diagnostic trouble code P0355 for a 2012 Ford Fusion indicates a problem with the Ignition Coil 'E' Primary/Secondary Circuit. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Corrosion or poor connections in the circuit. 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, Damaged wiring or connectors in the ignition coil circuit, Corrosion or poor connections in the circuit.
- 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 P0355 2012 Ford Fusion Description
The diagnostic trouble code P0355 for a 2012 Ford Fusion indicates a problem with the Ignition Coil 'E' Primary/Secondary Circuit. This code specifically points to an issue with the electrical circuitry of the ignition coil for cylinder 'E'. The ignition coil is responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which ignites the air-fuel mixture in the engine cylinders. When the ignition coil circuit malfunctions, it can lead to misfires, rough idling, decreased fuel efficiency, and potentially engine stalling.
Common Causes of P0355 2012 Ford Fusion
- Faulty ignition coil
- Damaged wiring or connectors in the ignition coil circuit
- Corrosion or poor connections in the circuit
- Issues with the Engine Control Module (ECM)
- Environmental factors such as moisture or heat affecting the ignition coil
Symptoms of P0355 2012 Ford Fusion
- Engine misfires
- Rough idling or vibrations
- Decreased fuel efficiency
- Engine stalling
- Illuminated check engine light
How to Fix P0355 2012 Ford Fusion
- Begin by diagnosing the specific cause of the issue using a scan tool to confirm the P0355 code and pinpoint the faulty ignition coil 'E'.
- Inspect the ignition coil, wiring, and connectors for any visible damage or corrosion. Replace any damaged components.
- Test the ignition coil with a multimeter to ensure it is functioning within specifications. Replace the ignition coil if necessary.
- Clear the diagnostic trouble codes from the vehicle's ECM using the scan tool.
- Test drive the vehicle to verify that the issue has been resolved and that the check engine light remains off.
Cost to Fix P0355 2012 Ford Fusion
The typical repair costs for addressing the P0355 code on a 2012 Ford Fusion can vary depending on the specific cause of the issue and the cost of parts and labor. In general, replacing an ignition coil can range from $100 to $300, with additional costs for diagnostic time and labor. The total repair cost, including parts and labor, could range from $150 to $500. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate.
When is the Code Detected?
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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.
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