P1450:00 indicates the Self Test has detected that the EVAP system is unable to bleed up fuel tank vacuum.
Diagnostic support note
This is an intermittent monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.
POSSIBLE CAUSE
Excessive fuel tank vacuum
Kinks or bends in the fuel vapor hoses and tubes
Charcoal canister inlet port, CV solenoid valve, EVAP dust separator or outlet hose has contamination or foreign materials
CV solenoid valve malfunction
Stuck open or close
Fuel tank pressure sensor malfunction (built-in evaporative hose component)