Drivable short-term, but fix now to avoid damage.
This code points to a primary or secondary circuit malfunction in ignition coil A, which is typically the coil for cylinder 1. The computer detects an electrical problem in how the coil fires, leading to a misfire that causes rough running, lost power, and potential catalytic converter damage. It's usually fixed by replacing the faulty coil or repairing its wiring and connector.
$100 – $400
Varies by vehicle and root cause.
Keep it to a minimum, and stop entirely if the check engine light is flashing. A flashing light means an active misfire that can ruin the catalytic converter, so prompt repair is important.
Expect about $100 to $400. Replacing the cylinder 1 coil and spark plug is the typical fix, while wiring repairs can add to the cost.
Yes. A misfire on cylinder 1 can damage the catalytic converter and leave the engine running rough, so it should be repaired without much delay.
Ignition coil A almost always corresponds to cylinder 1. Replacing that coil and checking its spark plug and wiring is the usual starting point for repairs.