Source-backed diagnostic reference

P2422 EV diagnostic code

EVAP vent valve failure, Powertrain Control Module (PCM) failure, Wiring issue

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

AUDI: EVAP vent valve failure, Powertrain Control Module (PCM) failure, Wiring issue Source
GENERIC: EVAP System Vent Valve Stuck Closed Source
GENERIC: EVAP Canister Vent Valve Stuck Closed Source

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