P0445: Evaporative Emission System Purge Control Valve Circuit Shorted

What does P0445 mean?

The EVAP purge-valve circuit is shorted. Damaged insulation or an internally shorted winding can overload the circuit or prevent the computer from controlling purge correctly.

Generic OBD-II definition: Evaporative Emission System Purge Control Valve Circuit Shorted. Confirm applicability in your vehicle service information.

Common causes

• Pinched or bare purge wiring
• Shorted purge-solenoid winding
• Damaged connector terminals

Symptoms

• Steady check engine light
• Often no noticeable driving change
• EVAP readiness may not complete

Diagnostic focus

Do not fit a larger fuse or repeatedly replace the original without locating the short. A shared power feed may also affect other components.

Can I keep driving with P0445?

Severity: Low With normal running and no fuel smell or leakage, arrange an emissions-system check. If you smell strong fuel vapor or see a leak, stop safely and have it inspected; keep ignition sources away.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

• Inspect the harness for shorts before replacing a blown fuse
• Isolate and test the solenoid winding to specification
• Repair the verified short and check commanded purge operation

Sources & review

• OBD-Codes.com: P0445
• TroubleCodes.net: generic code definitions

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.