I keep getting code P0401 I changed the EGR valve, catalytic converter,and 02 sensor can anyone give me any suggestions what I can try. Thank you in advance

I think it's like that I will take a look at it tomorrow afternoon. Thank you for your help

ok. the p0401 is an EGR insuff flow. it will be a plugged port(s) on your Accord and not converter or 02 sensor.wish you would have posted your question before replacing parts.when you see the black carbon build up/blockage,you probably won't believe it! if doing yourself,take pictures and take your time! i wish we could post pictures here,because i wanted to show EVERYONE how bad my F150 was clogged!!! if only folks knew or just google the code and read about what it means,instead of going out a buying a whole new EGR system and the problem still not fixed.when i saw how bad mine was clogged,i went into the FRED SANFORD MODE!!! post findings.

It's a 6 cylinder and I how is not to spend your to fix

There is an upper plate that can be removed on top of the plenum. You should be able to see which ports are plugged. Fyi - you'll need to replace the egr plate gasket.

I will look into that i took the top part off before replacing the EGR valve and only cleaned one port but I don't remember cleaning the fuel ones. Thank you