Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0125, P0171, P0172, P0200, P0220, P0300, P0442, P0446, P0452, P0453, P0641, P0651, P1514, P1515, P1516 or P2135 are not set.
The engine is operating for at least 2 seconds.
The Engine Coolant Temperature (ECT) is greater than -40°F (-40°C).
The Intake Air Temperature (IAT) is greater than -40°F (-40°C).
The Barometric (BARO) pressure is greater than 65 kPa.
The system voltage is between 9-18 volts.
The vehicle speed is less than 3 MPH.