garajizOBD-II code · generic
P2421
Evaporative Emission System Vent Valve Stuck Open
- System
- P2 — Powertrain / emissions (generic)
- Severity
- Low (1/5)
- Can I keep driving?
- Usually safe to drive
What does P2421 mean?
P2421 is defined as “Evaporative Emission System Vent Valve Stuck Open”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.