P0356
High SeverityIgnition Coil F Primary/Secondary Circuit
Ignition System
P0356 — Instant Answer
Ignition Coil F Primary/Secondary Circuit
Severity: HIGH SEVERITY
Meaning: Coil on cylinder 6 fault.
Safe to drive? NO if CEL is flashing. YES with caution if solid, but repair this week.
Estimated repair cost: $20 - $80
Most common causes:
- 1. Failed coil (35-45% of cases)
- 2. Wiring (10-25% of cases)
Symptoms
- ⚠️Cylinder 6 misfire
Common Causes
How to Diagnose P0356
- 1Swap coil
- 2Replace
OEM Procedures for P0356
P0356 affects the Ignition Coil. Found 34 OEM service manual procedures.
Ignition Coil
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Ignition Coil & ICM Replacement (HVS) - Installation
Showing 8 of 34 procedures
OEM Diagnostic Flowchart
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ArtiLink600
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Parts & Tools for This Job
Common parts shoppers buy for P0356 Ignition Coil F Primary/Secondary Circuit.
Oxygen Sensor
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Spark Plugs
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Ignition Coils
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Mass Air Flow Sensor
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Fuel Injectors
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Engine Oil
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OBD2 scanner
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Check SpecificationsBattery tester
Check cranking and charging health before replacing expensive parts.
A weak battery can mimic alternator or starter problems.
Check SpecificationsMultimeter kit
Confirm voltage, continuity, and sensor power with one simple kit.
A meter is the cheapest way to rule out a bad circuit fast.
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Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0356.
OEM Manual Evidence
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Exact Vehicle Hubs
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Open the exact vehicle hub for a repair workflow commonly associated with P0356.
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Open the exact vehicle hub grounded by OEM manual evidence related to P0356.
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Exact Repair Workflows
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Open the exact repair flow most commonly associated with P0356 on this vehicle.
Open the exact repair flow most commonly associated with P0356 on this vehicle.
Open the exact repair flow most commonly associated with P0356 on this vehicle.
Open the exact repair flow most commonly associated with P0356 on this vehicle.
Related Codes
Cylinder 6 is misfiring. Only on 6+ cylinder engines.
Coil on cylinder 5 fault.
The engine is misfiring across multiple cylinders. This is often caused by something that affects all cylinders — spark plugs, fuel quality, vacuum leak, or low compression.
Frequently Asked Questions
- Can a misfire damage the catalytic converter?
- Yes — unburned fuel from a misfire enters the cat and can overheat it, causing permanent damage.
- How urgent is a coil replacement?
- Fix within a week. A flashing check engine light means the cat is actively being damaged.
Find your service manual
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Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-06