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Engine-Codes – Generic – P0358

P0358 Code - Ignition Coil 8 Control Circuit

Quick Answer

The diagnostic trouble code P0358 indicates a problem with the ignition coil 8 control circuit in the vehicle. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM). 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, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0358 Description

The diagnostic trouble code P0358 indicates a problem with the ignition coil 8 control circuit in the vehicle. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine's cylinders. Ignition coil 8 specifically refers to the coil associated with the eighth cylinder in the engine.

OBDII Code P0358 - Ignition Coil 8 Control Circuit
P0358 Code - Ignition Coil 8 Control Circuit

Common Causes of P0358

  1. Faulty ignition coil
  2. Damaged wiring or connectors in the ignition coil circuit
  3. Issues with the Engine Control Module (ECM)
  4. Faulty spark plugs or spark plug wires
  5. Poor electrical connection

Symptoms of P0358

  1. Engine misfires
  2. Rough idling
  3. Decreased fuel efficiency
  4. Difficulty starting the engine
  5. Engine stalling

How to Fix P0358

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to pinpoint the problem within the ignition coil 8 control circuit.
  2. Inspect the wiring and connectors associated with the ignition coil to check for any damage or corrosion. Repair or replace as necessary.
  3. Test the ignition coil using a multimeter to determine if it is functioning correctly. Replace the ignition coil if it is found to be faulty.
  4. Check the spark plugs and spark plug wires for any signs of wear or damage. Replace them if needed.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0358

The typical repair costs for addressing the ignition coil 8 control circuit issue can vary depending on the specific cause of the problem and the vehicle's make and model. In general, the cost of replacing an ignition coil can range from $100 to $300, including parts and labor. Additional costs may be incurred if wiring or connectors need to be replaced. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the individual circumstances. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local area.

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Code P0358 Information for Specific Makes

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.

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