Code P0401 Egr Flow insufficient Fixed ! 

What if the needle barely moves on the gauge for the EGR modulator. Does this mean it's no good?

I have literally changed all the hoses, egr valve itself, the vst valve sensor on the bottom of the engine and cleaned everything thoroughly with electronics cleaner and this dumb light still comes back, I have pretty much replaced the entire system and this damn light still comes back, I'm at my wits end, it makes 0 sense

Where’s the vacuum switch wall

Can a simple hose from the EGR trigger the code?. In my case the top hose is cracked and damaged.

Thanks so much God bless you For share you experience

What's it called the peace u took off ??

Good video thanks for sharing 👍

Thank you for your great video. Helped me diagnose. I just did the diagnostics and need the same part. Maybe you could find the part name and number for those that may need it. And if you did a video on testing the vaccum switch, you should link it here and pin it to comments. Thank you for your time. Edit: ok you said vaccum switch. There was a Mighty Vac extension you could have used instead of the little piece of extra hose in case anyone has the MV but was thinking about picking up the little hose.

I changed all three parts and CEL still came back.

Please can you put the name and module of the pump that you used in the Check?

Thanks guess i got a bad egr valve

Car me want to fix car

Good video!

thank you!