P2416
EVAP Switching Valve Performance
The EVAP switching valve responds electrically but does not produce the expected pressure change. Often a stuck valve seat or a torn diaphragm.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Symptoms
- Check engine light on
- Possible smell of fuel near tank or engine bay
- Failed emissions inspection
- Loose-cap warning may appear
Common causes
Ordered by how often each turns out to be the cause.
- Valve seat stuckCommon
- Diaphragm tornPossible
Parts involved
- EVAP Switching Valve
P2416 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.