Mazda Error Code P0444: How to Fix It

Q: Can I drive with Mazda error code P0444?

Yes, you can drive with P0444 as it's not immediately dangerous, but you should fix it promptly. The error may cause slightly reduced fuel economy and increased emissions, and it will prevent your vehicle from passing emissions testing.

Q: How much does it cost to fix Mazda P0444?

If the issue is just a faulty purge valve, expect to pay $50-150 for the part plus 1-2 hours of labor. If extensive wiring repair is needed, costs can increase to $300-500 depending on the complexity of the repair.

Q: What causes EVAP purge valve circuit to go open?

Common causes include a failed purge valve solenoid, corroded electrical connections, damaged wiring harness, blown fuse, or rarely, a faulty engine control module (ECM).

Q: Will P0444 cause my Mazda to fail emissions testing?

Yes, P0444 is an emissions-related code and will typically cause your vehicle to fail emissions or inspection testing. The code must be cleared and the system must pass readiness monitors before testing.

Q: How do I know if my EVAP purge valve is bad?

Signs include the P0444 code, rough idle, poor fuel economy, or strong fuel odors. You can test the valve with a multimeter for proper resistance (20-40 ohms typically) and listen for an audible click when 12 volts is applied.

Abstract

Mazda error code P0444 indicates an open circuit in the EVAP (Evaporative Emission Control) purge control valve system. This means the engine control module cannot properly communicate with the purge valve that controls fuel vapor flow from the charcoal canister to the engine.