P1442 Stuck Closed in Secondary Air Injection Vacuum Switching Valve Bank 1

Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: Tundra, Sequoia

What does P1442 mean on a Toyota?

P1442 — Stuck Closed in Secondary Air Injection Vacuum Switching Valve Bank 1. This Toyota-enhanced code applies to Tundra, Sequoia.

Common causes of P1442

Carbon-seized vacuum switching valve
Lost vacuum supply to the valve
Failed valve solenoid
Blocked air passages
Cracked vacuum hose

How to fix P1442

Verify vacuum supply at the valve
Test solenoid function
Decarbonize the valve and passages
Inspect vacuum hoses
Replace the valve if seized