Can't take credit for this, stole off MSF
This takes all of 15 seconds to do.
Tools required:
NONE
Steps:
1. Turn car to "on" position (engine off) and wait 15 seconds
2. Unplug connector
3. Turn on car and check for CEL
4. Disable CEL using ATR
The EGR valve is now stuck closed and won't open
Picture of connector
Turning off CEL codes in ATR:
Just go to "edit" then "advanced parameters" then "toggles (base)" and UN-check P0401 (insufficient EGR flow code) and p0403 (EGR valvue circuit fault code).
Enjoy!