AutoCodes – Ford – P0357 2002 Ford F150

P0357 2002 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 2002 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.

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Code Popularity 6,570

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
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Code P0357 2002 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 2002 Ford F150 - Ignition Coil 'G' Primary/Secondary Circuit Malfunction - AutoCodes.com — P0357 2002 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0357 2002 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 2002 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 2002 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 2002 Ford F150 code?

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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 2002 Ford F150 Code

1. What are the common symptoms of OBDII code P0357 in a 2002 Ford F150?

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

2. What does the OBDII code P0357 for a 2002 Ford F150 indicate?

- 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 2002 Ford F150?

- Potential 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 2002 Ford F150?

- Use an OBDII scanner to retrieve the trouble code, visually inspect the wiring and connections, and perform a resistance test on the ignition coil 'G'.

5. Can a bad spark plug cause OBDII code P0357 to appear in a 2002 Ford F150?

- Yes, a faulty spark plug can lead to misfires and potentially trigger the P0357 code due to the strain it places on the ignition coil.

6. Is it safe to drive my 2002 Ford F150 with the ignition coil 'G' circuit malfunctioning?

- It is not recommended to drive the vehicle with this issue as it can lead to further damage, reduced performance, and potential engine stalling.

7. How can I repair the ignition coil 'G' primary/secondary circuit malfunction in my 2002 Ford F150?

- The repair may involve replacing the faulty ignition coil 'G', repairing damaged wiring, or reprogramming the ECM if necessary.

8. Can I reset the Check Engine Light after fixing the issue causing OBDII code P0357 in my 2002 Ford F150?

- Yes, you can reset the Check Engine Light using an OBDII scanner once the underlying issue has been successfully addressed.

9. Will a dealership or mechanic be able to diagnose and repair the ignition coil 'G' circuit issue in my 2002 Ford F150?

- Yes, a dealership or qualified mechanic with the necessary diagnostic equipment and expertise can diagnose and repair the problem efficiently.

10. How often should I check the ignition system components in my 2002 Ford F150 to prevent OBDII code P0357 from occurring?

- It is recommended to include regular maintenance checks on the ignition system components, including spark plugs and ignition coils, during routine service intervals to prevent issues like code P0357.