Here's what you should do:
* Reduce your speed and pull over safely as soon as possible. Do not continue driving at highway speeds.
* Turn off your engine. This helps prevent further damage.
* Do not restart your engine. Trying to restart could worsen the problem.
* Call a roadside assistance service or a trusted mechanic. Describe the situation and your location.
* If possible, note the conditions under which the light started flashing. This information can help the mechanic diagnose the issue. (e.g., Was it after hard acceleration? Did you notice any unusual sounds or smells?)
Possible causes of a flashing check engine light often include:
* Misfire: A cylinder is not firing properly, which can lead to serious engine damage if continued.
* Catalyst damage: The catalytic converter is overheating, which can be caused by a misfire or other issues. This is expensive to repair.
* Other serious problems: Problems with the ignition system, fuel system, or other critical engine components.
Do not attempt to diagnose or fix the problem yourself unless you have extensive automotive experience. Ignoring a flashing check engine light can lead to significant and costly repairs, or even engine failure. Get it checked by a professional mechanic as soon as possible.
