P1444 Secondary Air Injection Switching Valve Stuck Open Bank 2

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

What does P1444 mean on a Toyota?

P1444. Secondary Air Injection Switching Valve Stuck Open Bank 2. This Toyota-enhanced code applies to Tundra, Sequoia.

Common causes of P1444

Carbon-locked bank 2 switching valve
Failed bank 2 solenoid
Water intrusion
Corroded connector
Circuit fault

How to fix P1444

Inspect the bank 2 valve
Test solenoid operation
Check for water damage
Verify the control circuit
Replace the valve per tests

Sources and review

Last updated 2026-09-06.