AutoCodes – Ford – P0357 1997 Ford F150

P0357 1997 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 7, Ignition Coil 7 harness is open or shorted, Ignition Coil 7 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: P0357 1997 Ford F150 indicates Ignition Coil 'G' Primary/Secondary Circuit Malfunction.
Common causes: Common causes include Faulty Ignition Coil 7, Ignition Coil 7 harness is open or shorted, Ignition Coil 7 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,748

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0357 1997 Ford F150 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 P0357 1997 Ford F150 - Ignition Coil 'G' Primary/Secondary Circuit Malfunction - AutoCodes.com — P0357 1997 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0357 1997 Ford F150?

Faulty Ignition Coil 7
Ignition Coil 7 harness is open or shorted
Ignition Coil 7 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0357 1997 Ford F150?

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 does this mean?

Code Tech Notes

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).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0357 1997 Ford F150 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 P0357 1997 Ford F150 code?

Need more information on how to fix the P0357 1997 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0357 1997 Ford F150 code diagnosed by a professional: Find a repair shop in your area

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 1997 Ford F150 Code

1. What are the common symptoms of OBDII code P0357 on a 1997 Ford F150?

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

2. What are the possible causes of OBDII code P0357 on a 1997 Ford F150?

- The code P0357 indicates an issue with the ignition coil 'G' primary/secondary circuit, which can be caused by a faulty ignition coil, wiring issues, or a damaged spark plug.

3. How can I diagnose the ignition coil 'G' primary/secondary circuit malfunction on my 1997 Ford F150?

- Diagnose by checking the ignition coil 'G' for physical damage, testing the coil's resistance, inspecting the wiring for any breaks or shorts, and verifying the spark plug's condition.

4. Can a bad ignition coil cause OBDII code P0357 on a 1997 Ford F150?

- Yes, a faulty ignition coil can trigger code P0357 as it disrupts the primary/secondary circuit's operation, leading to ignition system malfunctions.

5. How can I repair OBDII code P0357 on my 1997 Ford F150?

- Repair involves replacing the faulty ignition coil 'G', repairing or replacing damaged wiring, and ensuring proper connection of the spark plug.

6. Are there any DIY tips for fixing OBDII code P0357 on a 1997 Ford F150?

- DIY tips include using a multimeter to test the ignition coil's resistance, carefully inspecting the wiring harness for any visible damage, and replacing the spark plug if necessary.

7. Can driving with OBDII code P0357 on a 1997 Ford F150 cause further damage?

- Continuing to drive with code P0357 can potentially lead to more severe engine issues, reduced fuel efficiency, and may eventually cause permanent damage to the ignition system.

8. How much does it typically cost to repair OBDII code P0357 on a 1997 Ford F150?

- The cost of repair can vary depending on the specific cause of the issue, but typically, replacing an ignition coil 'G' can cost between $100 to $200 including labor.

9. Is it safe to clear the OBDII code P0357 on a 1997 Ford F150 without fixing the underlying issue?

- Clearing the code without addressing the root cause can temporarily turn off the Check Engine Light, but the issue will persist, potentially leading to more significant problems in the future.

10. Can a mechanic easily fix OBDII code P0357 on a 1997 Ford F150?

- A qualified mechanic with experience in automotive diagnostics can efficiently diagnose and repair code P0357 by following the manufacturer's recommended procedures and using the necessary tools and equipment.