Conditions for Running the DTC
WARNING: This page is about a different variant/trim than selected.
- Before the engine control module (ECM) can report DTC P0446 failed, DTC P0452 and P0453 must run and pass.
- DTCs P0101, P0102, P0103, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0125, P0128, P0221, P0222, P0223, P0443, P0449, P0451, P0452, P0453, P0458, P0459, P0496, P0498, P0499, P0560, P0562, P0563, P0700, P2122, P2123, P2127, P2128, and P2138, are not set.
- The ignition 1 voltage is between 11-18 volts.
- The fuel system is operating in Closed Loop.
- The engine is idling.
- The ambient air temperature is between 2-32°C (36-90°F).
- The start-up engine coolant temperature (ECT) is within 10°C (18°F) of ambient air temperature.
- The FTP is between -1.8 to +7.5 mm Hg (-1.0 to +4.0 in H2O).
- The volumetric efficiency is less than 35 percent.
- The barometric pressure (BARO) is greater than 68 kPa.
- The fuel level is between 12-88 percent.
- The vehicle speed sensor (VSS) is less than 2 km/h (3 mph).
- The engine is operating for greater than 16 minutes or the long term fuel trim is stable.
- The conditions above exist for greater than 5 seconds.
- DTC P0446 will attempt to run up to 10 times or until the test completes successfully once per ignition cycle.