P2442 — AIR System Switching Valve Stuck Open Bank 2

P2442: AIR System Switching Valve Stuck Open Bank 2 — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

AIR System Switching Valve Stuck Open Bank 2. Basic catalogue definition; diagnostic details have not yet been reviewed.

Affected system: Powertrain

Symptoms

  • A check-engine warning may appear.
  • Rough running or misfires after a cold start are possible, although drivability may seem normal.

Possible causes

  • The secondary-air switching valve for bank 2 may stick open.
  • Leaking vacuum hoses, secondary-air pump faults or damaged electrical connections can also affect the system.
  • An engine control-module fault is a less common possibility.

What to check

  • Read P2442 alongside other stored codes.
  • Inspect secondary-air hoses, vacuum lines and the bank-2 switching valve for damage or sticking.
  • Check valve wiring and connectors, and verify operation using a suitable vehicle-specific method before replacing parts.

Also written as: P2442-00, P244200 (some scan tools add the fault-type byte, e.g. -00).