P1442 on Toyota
On Toyota, secondary air injection switching valve No. 2 stuck closed (bank 1)
Severity: Severity not verified — if the car runs badly, have it inspected
The fault stops fresh air being pushed into the exhaust during warm-up, an emissions matter, but none of our sources rate how long it is safe to keep driving.
This page covers only what differs on Toyota. For what P1442 means, the ranked causes and the test order, see the P1442 guide.
What's different on Toyota
ToyotaYour car
2005–2006 · Tundra · 2UZ-FE
Supported by vehicle dataToyota bulletin lists P1442 on 4.7 L Tundras; an owner stored P1442, P1445 and P2441 with a humming air pump and was quoted a new pump.
2005–2007 · Sequoia · 2UZ-FE
Supported by vehicle dataToyota bulletin lists P1442 on 4.7 L Sequoias; a dealer diagnosed an air injection pump problem on a 2005 with P1442 and P1445.
2005–2009 · 4Runner · 2UZ-FE
Supported by vehicle dataToyota bulletin lists this code among secondary air codes on 4.7 L engines.
2006–2007 · Land Cruiser · 2UZ-FE
Supported by vehicle dataToyota bulletin lists this code among secondary air codes on 4.7 L engines.
T-SB-0230-12 RevStatus unverified
Secondary air injection codes on 4.7 L engines
2005–20094runner, land-cruiser, sequoia, tundra · 2UZ-FE · NHTSA 10132097
Debris passing through the air injection pump assembly can contaminate the system and set secondary air codes including P1442 and P1445; the bulletin gives a repair procedure.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Toyota bulletin T-SB-0230-12 (Rev): secondary air injection codes on 2UZ-FE 4.7 L engines
- NHTSA complaint ODI 10497961 (2006 Toyota Tundra)
- NHTSA complaint ODI 10520439 (2005 Toyota Sequoia)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
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