Engine and gearbox (P)
P0351: Ignition Coil A Circuit Fault
This code indicates a problem with the ignition coil circuit for cylinder A. It may involve the primary or secondary circuit of the coil.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine misfire
- Rough idle
- Reduced power
- Check engine light on
Common causes
- Failed ignition coil
- Damaged connector or wiring
- Faulty driver circuit in ECU
How to check it yourself
- Check spark output from coil
- Measure coil resistance
- Inspect coil connector and wiring
- Test ECU command to coil
Can I keep driving?
The car can be driven, but performance may be reduced and further damage could occur.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer