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.

System voltage is 11-18 volts.
A/C status does not change.
Transaxle range does not change.
TP angle is less than one percent.
Intake Air Temperature (IAT) is less than 176°F (80°C).
Engine Coolant Temperature (ECT) is more than 167°F (75°C).
Engine speed is 1100-1400 RPM.
IAC position is steady.
Vehicle speed is more than 28 MPH.
BARO is more than 70 kPa.
Vehicle will need to be driven above 50 MPH, and then allowed to decelerate. When the vehicle is decelerating while meeting all of the criteria, the PCM will enable the test to run. As the test is running, you will see the desired EGR parameter and the EGR position sensor on the scan tool change from zero to a calibrated value above zero.
DTCs P0101, P0102, P0103, P0116, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0201-P0206, P0300, P0336, P0403, P0404, P0405, P0502, P0503, P0506, P0507, P1106, P1107, P1112, P1113, P1114, P1115, P1121, P1122, P1374, or P1404 are not set.