What happens when a ignition coil goes bad?

When an ignition coil goes bad, it can lead to several performance issues in the vehicle, such as misfiring, rough idling, and difficulty starting the engine. The faulty coil may fail to provide the necessary voltage to ignite the air-fuel mixture in the engine’s cylinders, resulting in reduced power and fuel efficiency. Additionally, warning lights may illuminate on the dashboard, indicating a problem with the ignition system. If not addressed, a bad ignition coil can cause further damage to other engine components.