Drivable short-term, but fix now to avoid damage.
This code means the engine computer detected an electrical fault in the primary or secondary circuit of ignition coil C (typically cylinder 3). It usually points to a failed ignition coil, but wiring damage or a bad connector can also be the culprit. It's a common code on modern coil-on-plug engines and is normally fixed by replacing the affected coil and checking its wiring.
$90 – $300
Varies by vehicle and root cause.
For short trips, usually yes, but you shouldn't rely on it. A misfiring coil can damage your catalytic converter and leave you with weak power. Get it diagnosed soon and avoid hard acceleration until then.
Most repairs run between $90 and $300. A single ignition coil and labor are usually inexpensive, but wiring repairs or replacing a fouled spark plug can add a bit to the total.
It's worth taking seriously. The car may still run, but the misfire it causes can harm the catalytic converter and worsen over time. It's generally an affordable fix when caught early.
The 'C' identifies a specific ignition coil, which on most engines corresponds to cylinder 3. The code tells the technician exactly which coil's circuit reported the fault, so the repair can be targeted quickly.