DTC P0446: Evaporative Emission Control System - Vent Control Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: EVAP Diagnostic Station (P/N J41413), or similar, is necessary for accurate diagnosis of EVAP system. This tool will be necessary for vacuum and pressurized leakdown testing of EVAP systems. It is equipped with 2 additional gauges to measure vacuum in inches of mercury (in. Hg), and to measure vapor flow in inches of water (in. H₂ O), within an EVAP circuit.

NOTE: For vacuum hose and EVAP system component identification, see appropriate diagram in VACUUM DIAGRAMS article.