Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 Pontiac Grand Prix, 2002 Pontiac Bonneville, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, and 2002 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Engine is cranking for 0.5 second, or running for one second.
Engine speed is more than 50 RPM.
Ignition 1 signal is more than 8 volts.
Idle Air Control (IAC) position is more than 5 counts.
Conditions are present for more than 0.5 second.