Conditions For Setting DTC

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The PCM detects that the commanded state 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.