DTC P0446 Cadillac
Evaporative Emissions (EVAP) Vent System Performance
Evaporative Emissions (EVAP) Vent System Performance
Description
DTCs P0068, P0101, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0122, P0123, P0125, P0128, P0220, P0222, P0223, P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0606, P0641, P0651, P0722, P0723, P2138, P2227, P2228, P2229 are not set The ignition voltage is between 11-32 V. 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 P0446 runs once per cold start when the above conditions are met. Diagnostic test will abort after 16.6 minutes.
Cause and Solution
The fuel tank vacuum is greater than -12 inches H2O vacuum for 5 seconds.
OR
Video Guide
Diagnostic Info
- DTC Code: P0446
- Brand: Cadillac