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P0449

Evaporative Emission (EVAP) Vent Valve — Circuit Problem

Low — fix soonSafe to drive for now

Severity: Fix soon. Usually safe to drive for now.

What P0449 means

The computer found a fault in the vent valve circuit, so the fuel vapor system cannot vent properly.

Common causes

How to fix it

Check the vent filter and wiring, then test and replace the vent valve.

Can I drive with P0449?

Safe to drive. Filling the tank may be difficult — the pump may click off early.

Related codes

Questions, answered

Is it safe to drive with code P0449?

Generally safe to drive, but get it checked soon. Safe to drive. Filling the tank may be difficult — the pump may click off early.

What causes code P0449?

The most common causes are: Failed vent valve or solenoid; Damaged wiring or connector; Blocked vent filter; Blown fuse. A scan tool and a visual check of the parts above is where a technician starts.

How do I fix code P0449?

Check the vent filter and wiring, then test and replace the vent valve.

Not repair advice. This page gives general information about code P0449 only. Cars differ by make, model and year — confirm the fault with a scan tool and have the repair done by a qualified technician.

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