DTC P0440: EVAP System: Notes
NOTE:
Evaporative Emission (EVAP) Diagnostic Station (J-41413), or similar, is necessary for accurate diagnostics 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
0), within an EVAP circuit.