Conditions for Running the DTC

DTCs P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0128, P0220, P0442, P0443, P0449, P0452, P0453, P0455, and P0502 are not set.
The ignition voltage is between 10-18 volts.
The barometric pressure (BARO) is more than 74 kPa.
The fuel level is between 15-85 percent.
The start-up engine coolant temperature (ECT) is between 4-30°C (39-86°F).
The start-up intake air temperature (IAT) is between 4-30°C (39-86°F).
The start-up ECT and IAT are within 8°C (14.4°F) of each other.
The purge solenoid valve is enabled.
DTC P0446 runs once per trip when the above conditions have been met.