Conditions for Running the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: The following conditions must be met prior to ignition OFF.

Before the ECM can report DTC P0442 failed, DTCs P0446, P0455, and P0496 must run and pass.
DTCs P0112, P0113, P0116, P0117, P0118, P0120, P0125, P0128, P0443, P0446, P0449, P0452, P0453, P0463, P0503, P1106, P1107, P1111, P1112, P1114, P1115, P1516, P2101, P2108, P2120, P2125, P2129, P2138, P2610 are not set.
The diagnostic runs once after a cold start drive cycle.
The start-up intake air temperature (IAT) is between 4-30°C (39-86°F).
The start-up engine coolant temperature (ECT) is less than 30°C (86°F).
The start-up IAT and ECT are within 8°C (15°F).
The barometric pressure (BARO) is more than 74 kPa.
The ambient air temperature is between 2-32°C (36-90°F).
The engine run time minimum is 10 minutes.
The vehicle has traveled more than 5 kilometers (3 miles) this trip.
The ECT is more than 70°C (158°F).
The fuel level is between 15-85 percent.
The ignition is OFF.
A refueling event is not detected.
DTC P0442 runs once per drive cycle when the above conditions are met.
One test occurs at ignition OFF after a drive cycle, and may require up to 45 minutes to complete. No more than 2 tests per day are allowed.