P0358 2018 Chevrolet Silverado Code - Ignition Coil 8 Control Circuit
Quick Answer
The P0358 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to an issue with the Ignition Coil 8 Control Circuit. Common causes include Faulty ignition coil, Damaged wiring or connectors in the control circuit, Defective 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 2018 Chevrolet Silverado indicates Ignition Coil 8 Control Circuit.
- Common causes
- Common causes include Faulty ignition coil, Damaged wiring or connectors in the control circuit, Defective 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0358 2018 Chevrolet Silverado Description
The P0358 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to an issue with the Ignition Coil 8 Control Circuit. 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 air-fuel mixture in the engine's cylinders. In this case, the control circuit for ignition coil 8 is experiencing a malfunction, which can lead to various performance issues in the vehicle.
Common Causes of P0358 2018 Chevrolet Silverado
- Faulty ignition coil
- Damaged wiring or connectors in the control circuit
- Defective Engine Control Module (ECM)
- Worn or fouled spark plugs
- Poor electrical connection
Symptoms of P0358 2018 Chevrolet Silverado
- Engine misfires
- Rough idling
- Decreased fuel efficiency
- Loss of engine power
- Illumination of the Check Engine Light
How to Fix P0358 2018 Chevrolet Silverado
- Begin by diagnosing the issue using a scan tool to confirm the P0358 code and identify the specific cylinder and ignition coil affected.
- Inspect the ignition coil, wiring, and connectors for any visible damage or wear. Replace any components that are faulty or damaged.
- Test the ignition coil using a multimeter to ensure it is functioning within specifications. Replace the ignition coil if necessary.
- Check and replace the spark plugs if they are worn or fouled, as they can contribute to ignition coil issues.
- Clear the DTC and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P0358 2018 Chevrolet Silverado
The typical repair costs for addressing the P0358 code on a 2018 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
Need more information about the P0358 2018 Chevrolet Silverado code?
Need more information on how to fix the P0358 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0358 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0358 2018 Chevrolet Silverado Code
1. What does the OBDII code P0358 mean on a 2018 Chevrolet Silverado?
P0358 indicates an issue with the ignition coil 8 control circuit, which means the engine control module (ECM) has detected a malfunction in the electrical circuit for cylinder 8's ignition coil.
2. What are the symptoms of code P0358 in a 2018 Chevy Silverado?
Common symptoms include engine misfires, rough idling, reduced power, poor fuel economy, a flashing or steady check engine light, and potentially difficulty starting the vehicle.
3. What causes the P0358 code to appear in a Chevrolet Silverado?
Possible causes include a faulty ignition coil, damaged or corroded wiring in the ignition coil circuit, a defective ECM, a bad spark plug, or poor electrical connections.
4. Is it safe to drive with a P0358 code on a 2018 Chevy Silverado?
Driving with this code is not recommended, as it can lead to engine misfires, reduced performance, and potential damage to the catalytic converter if unburned fuel enters the exhaust system.
5. How do I diagnose the P0358 code on my Chevrolet Silverado?
Start by inspecting the ignition coil 8, its wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity. If no issues are found, test the ignition coil and spark plug for cylinder 8.
6. How do I fix the P0358 code on a 2018 Chevy Silverado?
Repairs may include replacing the ignition coil for cylinder 8, repairing or replacing damaged wiring or connectors, installing a new spark plug, or, in rare cases, replacing the ECM.
7. Can a bad spark plug cause the P0358 code?
Yes, a faulty spark plug in cylinder 8 can lead to ignition coil issues and trigger the P0358 code.
8. How much does it cost to fix the P0358 code on a Chevrolet Silverado?
The repair cost varies depending on the cause. Replacing an ignition coil typically costs $100–$300, while repairing wiring or connectors may cost less. ECM replacement is more expensive, ranging from $500–$1,500.
9. Can I clear the P0358 code without fixing the problem?
Clearing the code without addressing the underlying issue will likely result in the code returning and may cause further engine damage over time.
10. How can I prevent the P0358 code from occurring again?
Regular maintenance, such as inspecting and replacing ignition components (coils, spark plugs, and wires) as needed, can help prevent the recurrence of code P0358. Ensure wiring and connectors are clean and secure.
Discuss the causes and fixes for P0358 2018 Chevrolet Silverado OBDII Code
Code P0358 2018 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.