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Engine-Codes – Ford – P0357 2001 Ford F150

P0357 2001 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

Quick Answer

The diagnostic trouble code P0357 for a 2001 Ford F150 indicates an issue with the Ignition Coil 'G' Primary/Secondary Circuit. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Defective spark plug in cylinder 'G'. 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
P0357 2001 Ford F150 indicates Ignition Coil 'G' Primary/Secondary Circuit Malfunction.
Common causes
Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Defective spark plug in cylinder 'G'.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0357 2001 Ford F150 Description

The diagnostic trouble code P0357 for a 2001 Ford F150 indicates an issue with the Ignition Coil 'G' Primary/Secondary Circuit. This means that there is a malfunction in the circuit that controls the ignition coil for cylinder 'G'. 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 air-fuel mixture in the engine cylinders. When this circuit malfunctions, it can lead to misfires, rough idling, poor fuel economy, and even engine stalling.

OBDII Code P0357 2001 Ford F150 - Ignition Coil 'G' Primary/Secondary Circuit Malfunction
P0357 2001 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

Common Causes of P0357 2001 Ford F150

  1. Faulty ignition coil
  2. Damaged wiring or connectors in the ignition coil circuit
  3. Defective spark plug in cylinder 'G'
  4. Issues with the engine control module (ECM)
  5. Corrosion or moisture in the ignition system components

Symptoms of P0357 2001 Ford F150

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

How to Fix P0357 2001 Ford F150

  1. Use a scan tool to verify the P0357 code and identify the specific cylinder 'G' causing the issue.
  2. Inspect the wiring and connectors in the ignition coil circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the ignition coil for proper operation using a multimeter. Replace the ignition coil if it fails the test.
  4. Check and replace the spark plug in cylinder 'G' if it is worn out or damaged.
  5. Clear the trouble code from the ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0357 2001 Ford F150

The typical repair costs for addressing the P0357 code on a 2001 Ford F150 can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple shops to get an accurate estimate. Additionally, factors such as the vehicle make and model, engine type, and location can influence the final repair costs.

What does this mean?

Tech Notes for P0357 2001 Ford F150

Each ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM).

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 P0357 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P0357 in a 2001 Ford F150?

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

2. What does the OBDII code P0357 indicate in a 2001 Ford F150?

- The code P0357 indicates an Ignition Coil 'G' Primary/Secondary Circuit Malfunction.

3. What are the possible causes of OBDII code P0357 in a 2001 Ford F150?

- Possible causes include a faulty ignition coil, damaged wiring or connectors, a defective PCM (Powertrain Control Module), or a poor electrical connection.

4. How can I diagnose the Ignition Coil 'G' Primary/Secondary Circuit Malfunction in a 2001 Ford F150?

- Diagnose the issue by checking the ignition coil 'G' for proper operation, inspecting the wiring and connectors for damage, and testing the PCM for faults.

5. Can a DIY enthusiast repair OBDII code P0357 in a 2001 Ford F150?

- Yes, a DIY enthusiast can repair the issue by replacing the faulty ignition coil 'G', repairing damaged wiring or connectors, or addressing any PCM issues.

6. Are there any tips for preventing OBDII code P0357 from recurring in a 2001 Ford F150?

- To prevent code P0357 from recurring, regularly check and maintain the ignition system components, including the ignition coils, wiring, and connectors.

7. How important is it to address OBDII code P0357 promptly in a 2001 Ford F150?

- It is important to address code P0357 promptly to prevent further damage to the engine, ensure optimal performance, and maintain fuel efficiency.

8. Can Ignition Coil 'G' Primary/Secondary Circuit Malfunction lead to other issues in a 2001 Ford F150?

- Yes, if left unaddressed, the Ignition Coil 'G' malfunction can lead to more severe engine problems, decreased fuel economy, and potential catalytic converter damage.

9. Is it safe to drive a 2001 Ford F150 with OBDII code P0357 triggered?

- It is not recommended to drive the vehicle with code P0357 active, as it can lead to engine misfires and potentially unsafe driving conditions.

10. How much does it typically cost to repair OBDII code P0357 in a 2001 Ford F150?

- The cost to repair code P0357 can vary depending on the specific issue, but it generally ranges from $100 to $300 for parts and labor.

Discuss the causes and fixes for P0357 2001 Ford F150 OBDII Code

Submit a New Comment

  • Replaced coil packs and spark plugs on a 2001 f150 4.6 !nd it still shows code p0357

    Reply to Comment

  • Here are the most common causes for the P0357 on the Ford F150
    - Ignition Coil
    - Spark Plug
    - Ignition Boot
    - Ignition Coil Wiring Harness
    - Powertrain Control Module

    Reply to Comment