Conditions For Running DTC

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0030, P1031, or P1032 are not set.
The system voltage during the current measurement is steady within 1 volt of the actual system voltage.
The engine speed is between 500-3000 RPM.
The engine run time is more than 180 seconds.
The Mass Air Flow (MAF) is between 4-30 g/s.
The HO2S overtemp control is not active.
All of the conditions are met for 3 seconds.