I would remove the EGR and clean it up.

Conditions for setting the code.

1. EGR Postition Sensor is .28 volts more than the EGR Learned Minimum Position parameter when the Desired EGR Position is commanded to 0% for 20 seconds
2.
The EGR Position Sensor parameter is more than 40% and is steady for .5 seconds after a test failure and before the next test will be run.
3. The above conditions are met 4 times.