Conditions For Setting DTC

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

EGR position sensor is 0.29 volts more than the EGR learned minimum position when the desired EGR position is commanded to 0 percent for more than 2 seconds.
The EGR position sensor parameter is more than 30 percent and is steady for 2 seconds after a test failure and before the next test will be run.
The condition must be present 3 times.