P0356
PowertrainIgnition Systemhigh severityIgnition Coil F Primary/Secondary Circuit Malfunction
What P0356 Means
The PCM detected a fault in the primary or secondary circuit of ignition coil F (cylinder 6). This affects spark delivery and causes a misfire on that cylinder.
Symptoms
- Engine misfire
- Rough idle
- Check engine light on
Common Causes
- Faulty ignition coil
- Damaged coil wiring or connector
- Poor coil ground
- Failed PCM coil driver
Diagnostic Steps
- Scan for related misfire codes
- Inspect coil F connector and wiring
- Swap coil F with another cylinder to test
- Measure coil primary/secondary resistance
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