DTC P1450: Notes

DTC P1450 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P1450	Unable to bleed up fuel tank vacuum
DETECTION CONDITION	P1450 indicates the Self-Test has detected that the EVAP system is unable to bleed up fuel tank vacuum.
POSSIBLE CAUSE	Blockages or kinks in the charcoal canister tube or purge solenoid valve outlet tube (between fuel tank, CV solenoid valve and charcoal canister). Fuel filler cap is stuck closed (no vacuum relief). Contaminated fuel vapor elbow on charcoal canister. Restricted charcoal canister. CV solenoid valve stuck open (partially or fully). Plugged CV solenoid valve filter. CV solenoid valve is stuck open. Power supply open (wiring harness near Fuel tank pressure sensor, Fuel tank pressure sensor or PCM). Fuel tank pressure sensor malfunction

DTC P1450

Unable to bleed up fuel tank vacuum

DETECTION CONDITION

P1450 indicates the Self-Test has detected that the EVAP system is unable to bleed up fuel tank vacuum.

POSSIBLE CAUSE

Blockages or kinks in the charcoal canister tube or purge solenoid valve outlet tube (between fuel tank, CV solenoid valve and charcoal canister).
Fuel filler cap is stuck closed (no vacuum relief).
Contaminated fuel vapor elbow on charcoal canister.
Restricted charcoal canister.
CV solenoid valve stuck open (partially or fully).
Plugged CV solenoid valve filter.
CV solenoid valve is stuck open.
Power supply open (wiring harness near Fuel tank pressure sensor, Fuel tank pressure sensor or PCM).
Fuel tank pressure sensor malfunction