Pending codes for P0300, P0301, P0302, P0303 and P0304

What is your question?

Hey, I am getting pending codes for all 4 cylinders and a random cylinder misfire. This is the second time i got those codes pending but it’s never actually turned my check engine light on. Also the car never feels like it is running rough and doesn’t feel or even sound like it’s actually misfiring. I tried looking into it but every place is saying something different could be wrong and I don’t know where to start. What do you think the problem is and how should I go about fixing it?

What makes this problem better or worse?

Nothing makes it better or worse as it hasn’t shown any symptoms

How long has your 2003 Honda Civic had this problem?

This is the second time I pulled the pending code. Once last week and once this week