Code Enable Criteria

WARNING: This page is about a different car, the 2001 GMC Savana, 2001 Chevrolet RV Cutaway, 2001 Chevrolet Cutaway, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Ignition voltage is 10-18 volts.
Barometric pressure is more than 75 kPa.
Fuel level is 20-85 percent.
Vehicle speed is less than 75 MPH.
Engine Coolant Temperature (ECT) is 39-86°F (4-30°C).
Intake Air Temperature (IAT) is 39-86°F (4-30°C).
Start-up ECT and IAT are within 16°F (9°C) of each other.
DTCs P0107, P0108, P0110, P0112, P0113, P0115, P0117, P0118, P0121, P0122, P0123, P0125, P0440, P0443, P0449, P0452, P0453, P1106, P1107, P1111, P1112, P1114, P1115, P1121, or P11212 are not active.

DTC sets when vacuum in EVAP system decays or leaks at too fast a rate.