Stop safely
Check engine (flashing) warning light: meaning and what to do
What it means
A flashing check engine light means a severe misfire. Unburned fuel can overheat and ruin the catalytic converter.
Can I keep driving?
No. When the check engine (flashing) light is on, pull over where it's safe and turn the engine off. Driving on can cause serious damage or make the car unsafe.
What to do
Reduce speed, avoid hard acceleration and get it checked today. If the car shakes or loses power, stop and have it towed.
On some cars it shows as text
CHECK ENGINECHECK
Typical repair cost (US)
$150–$2,500
Estimated range when a repair is needed; it depends on the car and the cause.
What the color tells you
Red lights warn about a problem that can be dangerous or damage the car. Stop as soon as it's safe.