Check engine light is on
The check engine light covers hundreds of possible faults. What matters most right now is whether it's steady or flashing: a steady light usually means you can drive to a shop soon, but a flashing light means an active engine misfire that can wreck the catalytic converter — stop driving.
Steady light — check the basics, then get it scanned
A steady check engine light with normal driving isn't an emergency. A loose gas cap is a classic, cheap cause; otherwise get the code read soon.
⚠️ Safety first
A steady light can still be a real fault. If the temperature or oil light also comes on, treat that as urgent and stop driving.
- 1Pull over safely and check the gas cap — tighten it until it clicks, a loose cap is a common trigger.
- 2The light may take a day or two of driving to clear after you tighten the cap.
- 3Watch for any change: rough running, power loss or the light starting to flash.
- 4Get the code scanned soon (many parts stores do it free) or booked into a shop.
- 5If it starts flashing or the car runs badly, stop and request a tow.
Flashing light — stop driving and get a tow
A flashing check engine light means the engine is misfiring right now, dumping raw fuel into the exhaust. Keep driving and you can destroy the catalytic converter — an expensive repair.
⚠️ Safety first
A flashing check engine light is a serious warning. Continuing to drive risks major engine and exhaust damage — request a tow.
- 1Ease off the throttle and get off the road as soon as it's safe.
- 2Turn the engine off once you're stopped in a safe spot.
- 3Do not keep driving to 'get it home' — misfires damage the catalytic converter quickly.
- 4Request a tow to a repair shop.
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