AutoCodes – Generic – P0358

P0358 Code - Ignition Coil 8 Control Circuit

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 8, Ignition Coil 8 harness is open or shorted, Ignition Coil 8 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: P0358 indicates Ignition Coil 8 Control Circuit.
Common causes: Common causes include Faulty Ignition Coil 8, Ignition Coil 8 harness is open or shorted, Ignition Coil 8 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 26,063

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 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0358 Description

The ignition system on this engine uses ignition coils with integrated power transistors. The Engine Control Module (ECM) controls the spark event for each cylinder through individual ignition coil control circuits. When the ECM commands the ignition control circuit On, electrical current flows through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM commands the ignition control circuit Off, interrupting current flow through the primary winding. The collapsing magnetic field created by the primary winding induces a high voltage in the secondary winding, which is connected to the spark plugs. The Diagnostic Trouble Code (DTC) will be set when the control circuit commanded by the ECM state does not match the actual state.

OBDII Code P0358 - Ignition Coil 8 Control Circuit - AutoCodes.com — P0358 Code - Ignition Coil 8 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0358?

Faulty Ignition Coil 8
Ignition Coil 8 harness is open or shorted
Ignition Coil 8 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0358?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0358 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 P0358 code?

Need more information on how to fix the P0358 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P0358 Audi — Ignition Coil 8 Primary/Secondary Circuit Malfunction
P0358 Buick — Ignition Coil 8 Control Circuit
P0358 Cadillac — Ignition Coil 8 Control Circuit
P0358 Chevrolet — Ignition Coil 8 Control Circuit
P0358 Ford — Ignition Coil 'H' Primary/Secondary Circuit Malfunction
P0358 GMC — Ignition Coil 8 Control Circuit
P0358 Lexus — Ignition Coil 8 Primary/Secondary Circuit Malfunction
P0358 Mercedes-Benz — Ignition Coil 8 Primary/Secondary Circuit Malfunction
P0358 Pontiac — Ignition Coil 8 Control Circuit
P0358 Toyota — Ignition Coil 8 Primary/Secondary Circuit Malfunction
P0358 Volkswagen — Ignition Coil 8 Primary/Secondary Circuit Malfunction

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.