P0444EVAP System Purge Control Valve A Circuit Open
- 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. P0444 belongs to the older scheme of circuit, open and shorted codes for purge valve A; Saab's Trionic T7 and VW use it, while GM reports an open circuit as P0443 and Ford covers everything in P0443. Saab checks with the output switched off: below 2 V the supply through the coil is missing or the line is grounded – Saab combines both under P0444, sets it after about 1 s and pauses the check until the next drive. Purging then stops.
- What you may notice
- Check engine light on
- Possibly fuel smell
- EVAP monitors do not run
- Likely causes
- LikelyPurge valve connector off or corroded
- PossibleValve coil open
- PossibleSupply wire, fuse, main relay or control wire open
- RareControl wire shorted to ground (Saab definition)
- 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: €20 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.