Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0068, P0606, P0106, P0107, P0108, P0112, P0133, P0116, P0117, P0118, P0120, P0122, P0123, P0125, P0220, P0222, P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0722, P0723, P2227, P2227, P2229 are not set.
The ignition voltage is between 11-32 volts.
The barometric pressure (BARO) is more than 70 kPa.
The fuel level is between 10-90 percent.
The engine coolant temperature (ECT) is less than 35°C (95°F).
The intake air temperature (IAT) is between 4-30°C (39-86°F).
DTC P0455 runs once per cold start when the above conditions are met.