Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0101, P0102, P0103, P0116, P0117, P0118, P0121, P0122, P0123, P0125, P0128, P0336, P0341, P0502, P0503, P1114, P1115, P1121, or P1336 are not set.
Engine speed is 1000-2500 RPM.
Throttle angle is more than 10 percent.
Engine load is more than 40 percent.
Engine Coolant Temperature (ECT) is more than 140°F (60°C).
Maximum spark retard is less than 15 degrees.
System voltage is more than 9 volts.
Engine run time is more than 30 seconds.