[discountmomoa]

The OEM PCV Valve for the 2.0 is part number 17130-5A2-A01.

The only person I've ever seen mention a PCV valve was cleanneon when he shared the maintenance minder list (https://www.civic11forum.com/thread...maintenance-schedule.6514/?post_id=64164&nested_view=1&sortby=oldest#post-64164), stating that you should change it every 30k, along with the brake fluid and CVT fluid. Seems to be located on the right side of the valve cover towards the back; doesn't look too difficult to change. And it isn't terribly expensive either.

 

[discountmomoa]

the owner's manual says nothing about replacing the PCV valve at 30k. probably some list a dealership put out to sell you more unnecessary services.

While that's true, the PCV is responsible for crankcase ventilation, i.e. oil blow-by. And while they may not break often, they can get gunked up. So 35-50 bucks every 30k miles (or every couple years or so on average) isn't a bad investment. For peace of mind if nothing else.