OBD-II code · Powertrain (generic, extended)
P2422 EVAP Canister Vent Valve Stuck Closed
The vent valve at the canister end of the EVAP system cannot open. Without ambient air entering the canister, fresh fuel cannot purge the stored vapors and refueling may trigger ORVR issues. Common with rusted or rodent-damaged vent valves.
Is it safe to drive with P2422?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyVent valve seized closed
- PossibleDrive circuit open
- Less likelyCarbon or debris buildup preventing free movement
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Evap Vent Valve
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.