P0358 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.
Code P0358 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0358 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?
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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.
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