P0355 2010 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 2010 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.
Code P0355 2010 Ford Fusion Description
What are the Possible Causes of the DTC P0355 2010 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 2010 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 2010 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.
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Frequently Asked Questions about P0355 2010 Ford Fusion Code
1. What does the OBDII code P0355 mean on a 2010 Ford Fusion?
P0355 indicates an issue in the Ignition Coil 'E' Primary/Secondary Circuit, which means the PCM (Powertrain Control Module) has detected a malfunction in the ignition coil circuit for cylinder 5.
2. What are the symptoms of code P0355 in a 2010 Ford Fusion?
Common symptoms include engine misfires, rough idling, reduced power, poor fuel economy, and the Check Engine Light illuminating.
3. What causes code P0355 in a 2010 Ford Fusion?
Possible causes include a faulty ignition coil, damaged or corroded wiring in the ignition coil circuit, a defective spark plug, or a malfunctioning PCM.
4. Can I drive my 2010 Ford Fusion with code P0355?
Driving with code P0355 is not recommended, as it can lead to engine misfires, reduced performance, and potential damage to the catalytic converter.
5. How do I diagnose code P0355 on a 2010 Ford Fusion?
Start by inspecting the ignition coil and its wiring for damage or corrosion. Use a multimeter to test the ignition coil's resistance and check for continuity in the wiring.
6. How do I fix code P0355 in a 2010 Ford Fusion?
Common fixes include replacing the faulty ignition coil, repairing or replacing damaged wiring, replacing the spark plug, or reprogramming the PCM if necessary.
7. How much does it cost to repair code P0355 on a 2010 Ford Fusion?
Repair costs depend on the issue but typically range from $50 to $250 for parts and labor, with ignition coil replacement being the most common fix.
8. Can a bad spark plug cause code P0355 in a 2010 Ford Fusion?
Yes, a faulty spark plug in cylinder 5 can cause improper ignition and trigger code P0355.
9. How do I prevent code P0355 in a 2010 Ford Fusion?
Regular maintenance, including inspecting and replacing spark plugs and ignition coils as needed, can help prevent this code.
10. Will clearing the code P0355 fix the problem in my 2010 Ford Fusion?
Clearing the code will turn off the Check Engine Light temporarily, but if the underlying issue is not resolved, the code will likely return.
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