So I have this 02 accord v6 coupe, with roughly 186,500+ miles on the dash. for the past few months now I have had a check engine light giving thr code p0401 ins. egr flow or something like that. I have tried cleaning the passage with carb cleaner and a screw driver, pipe cleaner, you name it. I also replaced the egr valve 2-3+ months ago, I erase the code again and again, but still it pops back up.Please help me out guys, any suggestions? I feel as if this is a simple issue that will eventually wear my engine down. Thanks for your response

 

With engine off, disconnect the 6P electrical connector on the EGR valve.
Connect a jumper between (+) battery terminal and #4 terminal on the EGR valve.
Turn the engine on.
Connect a jumper between (-) battery terminal(or clean ground) and #6 terminal on the EGR valve.
If the engine stumbles or stalls when grounded, then the EGR valve itself is most likely fine.
If no change then the EGR port is probably still partially blocked.

Note the length of the screwdriver he is using to clear out the port.

Also if the intake is heavily carbon plugged, you may need to remove the IAT and clear out in front of the passage laterally.

 

Thanks for the reply, so I have previously watched and tried both methods, still an error code. Did you by any chance try the 2nd video's method? What tool did you use exactly?

 

Do you think that blowing the egr port on the intake manifold with compress air will clear the port?

 

No.
That will just show if the port is clear.
I you are building pressure or it is hard to pass air through, then the port is still blocked from carbon buildup in the trough.