A flickering check engine light with a rough idle usually points to an engine misfire. Here’s what to check first on your Hyundai Accent V — and when to stop driving.
Why a flickering check engine light matters
When the check engine light blinks rather than stays steady, your Accent's ECU is telling you something urgent: it's detecting a misfire, often bad enough to send unburned fuel into the catalytic converter. That can overheat and destroy the cat in a surprisingly short time. Rough idle paired with a flicker almost always means one or more cylinders aren't firing reliably, especially at low RPM. Don't ignore it — a steady light can wait a few days, a flashing one usually can't.
