P0445 code meaning
EVAP System Purge Control Valve A Circuit Shorted
Powertrain system Generic code P04xx codes Check engine light
What P0445 means
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.
P0445 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0445
- Check engine light on
- Possibly fuel smell
- EVAP monitors do not run
Common causes of P0445
- Most likelyPurge valve coil shorted (shorted turns)
- PossibleControl wire shorted to positive (chafed)
- PossibleMoisture or corrosion in the connector
- Less likelyDriver in the engine module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
EVAP purge valvePurge valve wiringEngine control module
What each part of P0445 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 45 | The exact fault in that area. |
What to do next
- Note P0445 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0445
What does P0445 mean?
P0445 means "EVAP System Purge Control Valve A Circuit Shorted". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P0445?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0445 fail an emissions test?
Yes, it can. P0445 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0445 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0445 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.