AutoCodes – Ford – P0357 1998 Ford F150

P0357 1998 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 1998 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 3,150

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 1998 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 1998 Ford F150 - Ignition Coil 'G' Primary/Secondary Circuit Malfunction - AutoCodes.com — P0357 1998 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0357 1998 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 1998 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 1998 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 1998 Ford F150 code?

Need more information on how to fix the P0357 1998 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0357 1998 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 1998 Ford F150 Code

1. What are the common symptoms of OBDII code P0357 in a 1998 Ford F150?

- Common symptoms include engine misfires, rough idling, poor acceleration, and difficulty starting the vehicle.

2. What does the OBDII code P0357 indicate in a 1998 Ford F150?

- The code indicates a malfunction in the ignition coil 'G' primary/secondary circuit.

3. What are the possible causes of OBDII code P0357 in a 1998 Ford F150?

- Possible causes include a faulty ignition coil 'G', wiring issues in the ignition coil circuit, or a problem with the engine control module (ECM).

4. How can I diagnose the ignition coil 'G' primary/secondary circuit malfunction in my 1998 Ford F150?

- You can use a scan tool to read the OBDII code, perform a visual inspection of the ignition coil and its wiring, and conduct a continuity test to check for any wiring faults.

5. Can I still drive my 1998 Ford F150 with OBDII code P0357?

- It is not recommended to drive your vehicle with this code as it can lead to further engine damage and safety issues. It's best to address the issue promptly.

6. How can I repair OBDII code P0357 in my 1998 Ford F150?

- Repair options include replacing the faulty ignition coil 'G', repairing any damaged wiring, or reprogramming the ECM if necessary.

7. Is it possible to reset the OBDII code P0357 in a 1998 Ford F150 without fixing the issue?

- While you can clear the code with a scan tool, it is not recommended as the underlying issue causing the code will still persist.

8. Can a DIY enthusiast fix OBDII code P0357 in a 1998 Ford F150?

- Depending on your experience and tools, you may be able to replace the ignition coil 'G' yourself. However, diagnosing and repairing wiring issues or ECM problems may require professional assistance.

9. How much does it cost to fix OBDII code P0357 in a 1998 Ford F150?

- The cost can vary depending on the exact cause of the issue, but replacing an ignition coil 'G' can range from $100 to $300 including parts and labor.

10. How can I prevent OBDII code P0357 from recurring in my 1998 Ford F150?

- Regular maintenance, such as checking and replacing ignition coils as needed, inspecting wiring for damage, and keeping the ECM software up to date, can help prevent this code from recurring.