AutoCodesFord – P0356 Ford

P0356 Ford Code - Ignition Coil 'F' Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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
P0356 Ford indicates Ignition Coil 'F' Primary/Secondary Circuit .
Common causes
Common causes include Faulty Ignition Coil 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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 97,745
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0356 Ford 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 P0356 Ford - Ignition Coil 'F' Primary/Secondary Circuit  - AutoCodes.com
P0356 Ford Code - Ignition Coil 'F' Primary/Secondary Circuit

What are the Possible Causes of the DTC P0356 Ford?

  • Faulty Ignition Coil 6
  • Ignition Coil 6 harness is open or shorted
  • Ignition Coil 6 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0356 Ford?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0356 Ford 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 P0356 Ford code?

Need more information on how to fix the P0356 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0356 Ford code diagnosed by a professional: Find a repair shop in your area

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 P0356 Ford Code

1. What are the common symptoms of OBDII code P0356 in a Ford vehicle?

The common symptoms of P0356 include rough idling, engine misfires, lack of power, and illuminated Check Engine Light.

2. What does the OBDII code P0356 for a Ford indicate?

OBDII code P0356 indicates a problem with the ignition coil 'F' primary/secondary circuit in the vehicle's ignition system.

3. What are the possible causes of OBDII code P0356 in a Ford?

Possible causes of P0356 include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the OBDII code P0356 in my Ford?

Diagnosing P0356 involves using a scan tool to check for the code, inspecting the ignition coil 'F' and its connections, and testing the circuit for proper voltage and continuity.

5. Can a bad spark plug cause OBDII code P0356 in a Ford?

Yes, a bad spark plug can contribute to OBDII code P0356 as it can affect the performance of the ignition coil 'F' and lead to circuit malfunctions.

6. How can I repair OBDII code P0356 in my Ford?

Repairing P0356 may involve replacing the faulty ignition coil 'F', repairing damaged wiring or connectors, or resetting the ECM after fixing the issue.

7. Is it safe to continue driving with OBDII code P0356 in a Ford?

It is not recommended to drive with P0356 as it can lead to more severe engine problems and potential damage if left unresolved.

8. Can I reset the Check Engine Light after fixing OBDII code P0356 in my Ford?

Yes, you can reset the Check Engine Light using a scan tool after addressing the underlying issue causing the P0356 trouble code.

9. How do I prevent OBDII code P0356 from coming back in my Ford?

To prevent P0356 from recurring, it's essential to perform regular maintenance on the ignition system, including checking and replacing ignition components as needed.

10. Can a DIY enthusiast fix OBDII code P0356 in a Ford?

While some DIY enthusiasts may be able to diagnose and repair P0356, it is recommended to seek professional help, especially if you are not experienced with automotive electrical systems.

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