P0450 — Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

What it means

P0450 is an OBD-II diagnostic trouble code: Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.