P0445EVAP System Purge Control Valve A Circuit Shorted
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- The evaporative emission (EVAP) system stores fuel vapour from the tank in a charcoal canister; a purge valve lets the engine draw it off, and a vent valve opens the canister to fresh air. P0445 is the short-circuit code of the older scheme for purge valve A, used by Saab's Trionic T7 and VW; GM reports shorts as P0458/P0459, Ford covers them in P0443. Saab checks with the low-side output switched on: the voltage should then be near 0 V, and above 2 V means the line is shorted to positive or the coil is shorted, with the driver in current limiting. The code sets after about 1 s; the driver protects itself by switching off, so purging stops.
- What you may notice
- Check engine light on
- Possibly fuel smell
- EVAP monitors do not run
- Likely causes
- LikelyPurge valve coil shorted (shorted turns)
- PossibleControl wire shorted to positive (chafed)
- PossibleMoisture or corrosion in the connector
- RareDriver in the engine module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.