Powertrain
generic / SAE
P2420
EVAP Switching Valve Stuck Closed
The EVAP switching valve cannot open when commanded. Purge or test flow cannot reach the appropriate path and the leak monitor aborts.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 20
Possible causes
- Valve stuck closed mechanically high
- Drive circuit open medium
- Carbon or debris buildup preventing free movement low
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–400 €
- Estimated time: 0.5–2 h
- Component: evap switching valve
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012