AutoCodes – Ford – P0357 2000 Ford F150

P0357 2000 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 2000 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 4,430

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 2000 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 2000 Ford F150 - Ignition Coil 'G' Primary/Secondary Circuit Malfunction - AutoCodes.com — P0357 2000 Ford F150 Code - Ignition Coil 'G' Primary/Secondary Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0357 2000 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 2000 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 2000 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.

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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 2000 Ford F150 Code

What does the OBDII code P0357 mean on a 2000 Ford F150?

P0357 indicates a malfunction in the ignition coil 'G' primary or secondary circuit, which means the Powertrain Control Module (PCM) has detected an issue with the electrical connection or operation of the ignition coil for cylinder 7.

What are the symptoms of the P0357 code on a 2000 Ford F150?

Common symptoms include engine misfires, rough idling, reduced fuel efficiency, poor acceleration, and in some cases, the Check Engine Light will illuminate.

What causes the P0357 code to appear on a 2000 Ford F150?

Possible causes include a faulty ignition coil, damaged wiring or connectors in the coil circuit, a bad spark plug, a malfunctioning PCM, or corrosion in the coil harness.

Can I drive my 2000 Ford F150 with the P0357 code?

Driving with this code is not recommended, as it can lead to poor engine performance, potential damage to the catalytic converter, and increased wear on other ignition components.

How do I diagnose the P0357 code on a 2000 Ford F150?

Start by inspecting the ignition coil for cylinder 7, checking for visible damage or corrosion. Test the coil with a multimeter and inspect the wiring and connectors for breaks or shorts. If no issues are found, the PCM may require testing.

How do I fix the P0357 code on a 2000 Ford F150?

Repairs may include replacing the faulty ignition coil for cylinder 7, repairing or replacing damaged wiring or connectors, replacing a bad spark plug, or reprogramming or replacing the PCM if necessary.

What tools do I need to fix the P0357 code on a 2000 Ford F150?

Youâ€™ll typically need a multimeter for testing the circuit, a spark plug socket and wrench set, replacement ignition coil or spark plug if needed, and an OBDII scanner to clear the code after repairs.

How can I prevent the P0357 code from returning?

Regular maintenance such as inspecting ignition components, replacing spark plugs at recommended intervals, and ensuring wiring is secure and free of corrosion can help prevent this code.

What is the cost to repair the P0357 code on a 2000 Ford F150?

The repair cost depends on the issue, but replacing an ignition coil typically costs $50-$150 for parts and additional labor if done professionally. More extensive repairs, like PCM replacement, can cost significantly more.

Can a faulty spark plug cause the P0357 code?

Yes, a bad spark plug in cylinder 7 can cause ignition coil 'G' to malfunction, triggering the P0357 code. Replacing the spark plug may resolve the issue.