P1444 on Toyota

Secondary air switching valve No. 2 stuck open (Toyota, Lexus)

Severity: Monitor

It is an emissions-system fault that turns the check engine light on. A Sequoia complaint reports poor acceleration with it, so watch drivability.

It gets more serious if:

Inspect soon: Inspect soon if the engine loses power or the traction and stability lights come on with the check engine light, as one Sequoia owner reported.

This page covers only what differs on Toyota. For what P1444 means, the ranked causes and the test order, see the P1444 guide.

2005–2007 · Sequoia
Supported by vehicle data
Covered by Toyota's 4.7 L secondary air bulletin; a 2005 owner complaint reports P1444 with poor acceleration.
2005–2006 · Tundra
Supported by vehicle data
Covered by Toyota's 4.7 L secondary air bulletin for 2005-2006 Tundra.

T-SB-0230-12 RevStatus unverified
Secondary air injection codes on 2UZ-FE 4.7 L engines
2005–20094runner, land-cruiser, sequoia, tundra · issued April 2, 2018 · NHTSA 10132097
Lists P1441/P1444 among secondary air injection codes that may set a MIL; debris from the air injection pump can contaminate the system. The NHTSA summary does not give the full procedure.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Toyota T-SB-0230-12 Rev: secondary air injection codes on 2UZ-FE 4.7 L engines — Toyota Motor Sales via NHTSA , April 2, 2018
NHTSA complaint ODI 10630704 (2005 Toyota Sequoia, P1444) — NHTSA Office of Defects Investigation (consumer complaint)

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error