2010 Toyota Tundra (2nd gen) · Known Issue
2010 Toyota Tundra Secondary Air Injection Pump Failure: What It Really Costs to Fix
Quick answer: 2010 Toyota Tundra secondary air injection pump failure typically costs $1,200 to $3,500 at an independent shop, depending on which component failed.
Applies to: 4.7L or 5.7L V8 (5.7L from 2010). Other versions of the 2010 Toyota Tundra do not have this problem.
What the Issue Is
The 4.7-liter and 5.7-liter V8s in these Tundras use a secondary air injection system: an electric air pump and switching valves that blow air into the exhaust for a short time after a cold start so the catalytic converters warm up faster. Moisture gets into the pump and valves, they corrode and stick, and the truck sets check-engine codes such as P2440 or P2442. Owners report the truck can also drop into a reduced-power limp mode.
Toyota acknowledged the moisture problem. A customer support program extended coverage on the air injection pumps and switching valves of 2007 to 2010 Tundras and 2008 to 2010 Sequoias to 10 years or 150,000 miles, warranty enhancement ZG6 covered 2011 Tundras and Sequoias, and a limited service campaign addressed 2012 to 2013 trucks. The 2007 to 2010 extension has expired; on a 2011 to 2013 truck, ask a Toyota dealer to check the VIN for any open campaign before paying.
The proper repair is expensive for a system that runs only briefly after each cold start, and that mismatch created a market for bypass or emulator kits. They clear the codes cheaply but defeat emissions equipment, which is illegal for road use and fails inspection in testing states. For buyers, the practical test is simple: cold start the truck yourself and listen for the hum that says the system still works.
Symptoms to Watch For
- 1.Check-engine light with P2440 or P2442 codes
- 2.Reduced-power limp mode after the codes set
- 3.No electric hum from the air pump for the first minute or so after a cold start
- 4.Rattle or hiss from the air injection plumbing at startup
- 5.Codes returning shortly after being cleared
Real Repair Costs
Estimated proper-repair pricing with OEM components; replacing the pump and the switching valves defines the top end. Bypass kits cost a few hundred dollars but defeat emissions equipment, which is illegal on the road and fails inspection where testing exists.
| Repair | Typical Cost (installed) |
|---|---|
| Air pump or one switching valve, OEM, installed | $1,200-$1,800 |
| Pump plus switching valves, installedthe full repair | $2,000-$3,500 |
Major issue: budget for it. Ranges are US independent-shop estimates with quality parts. Use them as negotiation grounding, not a quote.
Mechanic's Tip: Spot It Before You Buy
Insist on a true cold start, overnight cold rather than "cooled off for an hour", and listen from the front of the truck as it fires: a healthy system makes an unmistakable electric hum, like a shop vac under the hood, for about a minute. Silence on a cold start, or a check-engine light with P2440-family codes on the scan, means the system has failed or been bypassed. Ask directly whether a bypass kit is installed; in emissions-testing states that is an inspection failure you would inherit.
Own a 2010 Toyota Tundra? Keep an eye on it for free.
Add it to your Avturo garage and you get recall alerts for this exact car, an estimate of what it is worth, and a mechanic you can ask about secondary air injection pump failure at any hour.
Free to start. Takes a minute.
Frequently Asked Questions
What does the Tundra secondary air injection repair cost?▼
A proper OEM repair runs roughly $1,200 to $1,800 for the pump or a single valve and $2,000 to $3,500 for the pump plus valves. Toyota's extended coverage for 2007 to 2010 trucks has expired. Bypass kits costing a few hundred dollars exist but defeat emissions equipment, with the legal and inspection consequences that implies.
Can I drive a Tundra in limp mode from air injection codes?▼
The truck moves, but with reduced power: no towing and no confident merging, and leaving it that way risks masking other problems behind the stored codes. Treat it as a schedule-now item rather than a new normal, and have the codes read before deciding which part to replace.
Are bypass kits a legitimate fix?▼
They clear the codes, which is why they are popular, but they disable federally required emissions equipment, are illegal for road use, and fail inspection anywhere with functional smog checks. A truck for sale with a bypass installed should be priced as if it needs the proper repair, because making it legal again costs exactly that.
Why did the air injection system fail in the first place?▼
Moisture. Toyota's coverage extensions name moisture in the air injection pumps and switching valves as the cause of the check-engine light: the parts corrode and stick. A truck with the pump and valves replaced, and records to show it, is meaningfully de-risked.
Sources
The facts on this page were last checked against these documents on October 10, 2026. Programs and their coverage end; check the car's VIN with a dealer for what still applies.
- Warranty program: Tundra Headquarters: Toyota extends air injection pump coverage on 2007-2010 Tundra and 2008-2010 Sequoia (tundraheadquarters.com)
- Warranty program: Toyota warranty enhancement ZG6: 2011 Tundra and Sequoia air injection pumps and valves (NHTSA copy) (static.nhtsa.gov)
- Warranty program: Toyota air injection campaign document for later Tundra and Sequoia (NHTSA copy) (static.nhtsa.gov)
- Owner reports: Cherish Your Car: Toyota 5.7 engine problems (air injection limp mode, cam tower leaks) (cherishyourcar.com)
- Reference: Toyota secondary air system diagnosis and repair (technician guide) (automotivetechinfo.com)
- Reference: Go-Parts: code P2440 on 2005-2012 Toyota Tundra (air switching valve) (go-parts.com)
More 2010 Toyota Tundra Known Issues
More Toyota Problems
Researching other vehicles? Browse known problems and repair costs for 59 popular models
Checking out a listing for a Toyota Tundra?
Run it through Avturo. It compares the asking price with similar listings, matches the car to documented problems like secondary air injection pump failure, and flags the red flags in the ad before you drive out to see it.
Free to start. We keep your listing while you create your account.