The check engine light comes on when the diagnostic systems detect an issue with one or more of the vehicles sensors or parts that are monitored by the computers. It could be an emission related issue as well.
One thing to keep in mind that when the engine light starts to flash it typically means the issue needs to be taken care of urgently.
Since the light is illuminated, the best next step would be to scan the vehicle for trouble codes. As the codes can help with the diagnostics. Depending on your location, typically you can take your vehicle to your local auto parts store, and they can scan and provide you with the code(s).
Here is a helpful guide:
The vehicle can shake when the engine runs rough. It can run rough due to misfire, also for a vacuum leak.
Please let me know what you find.
Tuesday, October 5th, 2021 AT 8:18 PM