AutoCodes – Ford – P0359 Ford

P0359 Ford Code - Ignition Coil 'I' Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 9, Ignition Coil 9 harness is open or shorted, Ignition Coil 9 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: P0359 Ford indicates Ignition Coil 'I' Primary/Secondary Circuit .
Common causes: Common causes include Faulty Ignition Coil 9, Ignition Coil 9 harness is open or shorted, Ignition Coil 9 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 16,204

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
Comments
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Code P0359 Ford 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 P0359 Ford - Ignition Coil 'I' Primary/Secondary Circuit - AutoCodes.com — P0359 Ford Code - Ignition Coil 'I' Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0359 Ford?

Faulty Ignition Coil 9
Ignition Coil 9 harness is open or shorted
Ignition Coil 9 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0359 Ford?

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

Ford Ignition Coil Primary Codes P0351-P0360 Diagnostic Walk through

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0359 Ford 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.