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

Duration: PT5M20S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: P0446
  • Brand: Cadillac
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