Code po300

Hello thanks for using 2CarPros.

For the fault code p0300 misfire run our guide.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Let us know what happens.
thank you.

Misfire is a result of no proper combustion inside a cylinder that causes absence of spark, fuel or low engine compression.

Check for spark run our guide:
https://www.2carpros.com/articles/how-to-test-an-ignition-system

Check injector pulse run our guide:
https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Check engine compression:
https://www.2carpros.com/articles/how-to-test-engine-compression

Feed back the result we are interested to know the problem.
Thank you