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.

The control module detects that the commanded start of the MIL driver and the actual state of the control circuit do not match.
The conditions are present for a minimum of 30 seconds.