Conditions For Setting DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. 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.
The vehicle must be driven.
The condition has to be present 3 times.