If I get the blocker plate will that stop the P0401 code? Or do I need to get the fingerstick as well? Thanks

Read up! There is a ton of information in previous threads. Search for P0401. Check with fingers. He is the expert on this and he is a supporting vendor. I believe you need the stick to completely get rid of the codes.

A plate ceases the function. The Stick combats the codes. Tons of details on my site along with the Installation Instructions, FAQ page and also an emissions systems overview.

Thanks John!