P0351
PowertrainIgnition Systemmoderate severityIgnition Coil A Primary/Secondary Circuit Malfunction
What P0351 Means
A fault is detected in ignition coil A primary or secondary circuit. This typically causes a misfire on the affected cylinder.
Symptoms
- Cylinder misfire
- Rough idle
- Reduced power
Common Causes
- Faulty ignition coil A
- Coil connector/wiring fault
- Bad spark plug
- PCM coil driver fault
Diagnostic Steps
- Confirm coil A code
- Inspect coil A connector and wiring
- Test coil resistance
- Swap coil to verify
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