Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2002 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> External Pages >> Different car >> Section 1848 (Engine Controls And Fuel - 2.4L - DTC P0324 To DTC P1400) >> DTC P0446 >> Circuit/System Description

Circuit/System Description

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.

This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of vacuum to be developed in the EVAP system. With the purge valve open and the canister vent valve open, if EVAP system vacuum goes above a calibrated threshold, the test will fail.

scientia non olet · About Mike's Workshop Manuals