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P0446

Evaporative Emission (EVAP) Vent Valve — Circuit Problem

Low — fix soonSafe to drive for now

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

What P0446 means

The computer found a fault in the circuit for the vent valve, the valve that lets fresh air into the fuel vapor system.

Common causes

How to fix it

Check the vent filter for blockage, inspect the wiring, and test the vent valve.

Can I drive with P0446?

Safe to drive. You may have trouble filling the tank — the pump may keep clicking off.

Related codes

Questions, answered

Is it safe to drive with code P0446?

Generally safe to drive, but get it checked soon. Safe to drive. You may have trouble filling the tank — the pump may keep clicking off.

What causes code P0446?

The most common causes are: Failed vent valve; 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 P0446?

Check the vent filter for blockage, inspect the wiring, and test the vent valve.

Not repair advice. This page gives general information about code P0446 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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