This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
full bulletin at NHTSA ↗2011 Toyota Tundra engine problems
moderate Owners of the 2011 Toyota Tundra have filed 25 NHTSA complaints about the engine, typically surfacing around 83,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
25
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2007 Tundra | 43 |
| 2008 Tundra | 42 |
| 2009 Tundra | 4 |
| 2011 Tundra (this page) | 25 |
| 2012 Tundra | 43 |
| 2013 Tundra | 21 |
| 2014 Tundra | 6 |
What stands out
Owners have filed 25 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Engine accounts for 19% of all owner complaints filed against this vehicle, across 8 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 – 2025 model year Toyota vehicles.
full bulletin at NHTSA ↗This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website.
full bulletin at NHTSA ↗TT: HVAC drain tube is found to be blocked/clogged.
full bulletin at NHTSA ↗TSB: This Service Bulletin provides updated non-electric water pump leak inspection and diagnostic tips for some 2008 ? 2021 model year Toyota vehicles.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2011 Tundra has two major recurring engine issues that owners document repeatedly. The secondary air injection pump fails due to water and debris contamination, causing the engine to enter limp mode and drop to 20–35 mph without warning. Owners report this happens anywhere from 22,000 to 219,000 miles, with repair costs between $2,000 and $3,116. Check engine codes P2440, P2441, and P2442 appear in multiple narratives. Toyota covered the same failure on 2007–2010 models under extended warranty but refused to extend the same coverage to 2011 models, citing the vehicle exceeding mileage limits, even though they used identical pump designs across the generation.
The cam tower seal consistently leaks oil onto exhaust manifolds, creating visible smoke and a burning smell. Multiple owners report this as a fire hazard with grandchildren in the vehicle. Repairs exceed $3,200. One owner documented that Toyota denied recall requests twice.
Other reported issues include a flex-fuel ECU that incorrectly reads ethanol in regular gasoline, causing power loss and lean running; high cold-start idle with piston slap noise that dealers dismiss as normal; excessive oil consumption (1 quart per 1,000 miles at 50,000 miles); and one valve spring failure at 136,124 miles after the extended warranty expired. Owners consistently report dealer dismissal of problems and Toyota's refusal to acknowledge design defects across the model year range.
Same Toyota Tundra engine reports on nearby years: 2008 · 2012 · 2013
Failure modes owners describe
Secondary Air Injection Pump / Valve Failure
Water and debris enter the air injection pump through poor sealing, causing corrosion and valve sticking. The pump fails or the secondary air injection valve becomes stuck open or closed, preventing proper exhaust dilution. Toyota issued extended warranties for 2007–2010 models but not 2011, despite using the same design.
When: Ranges from 22,000 to 219,000 miles; often occurs within first few years of ownership.
Symptoms owners cite: Vehicle enters 'limp mode' and cannot exceed 20–35 mph; Check engine light illuminates; Sudden loss of power while driving; Hesitation before acceleration; Multiple occurrences of the failure recurring after repair
Codes mentioned: P2441, P2442, P2440
Repairs/costs cited: Replacement of air injection pump and/or secondary air injection valve. Owner reports range $2,000–$3,116. One owner documented Toyota charged $2,860 for secondary injection valve repair. Another documented $3,116.63 for air pumps kit replacement.
Recalls/TSBs owners mention: Toyota issued extended warranty (10 years/150,000 miles per POL17-02) for 2007–2010 Tundras and Sequoias, and later a warranty enhancement letter (August 2017) for some owners with proof of prior out-of-warranty repair. No recall issued. 2011 models initially denied coverage; some 2012–2013 models received fixes Toyota did not extend to 2011. Toyota refused reimbursement in multiple cases and told one owner 'there are no plans to release a fix for the 2011s.'
Cam Tower Seal / Gasket Oil Leak
Oil leaks from the camshaft tower seal/gasket onto the exhaust heat shield and manifold. Leaks are attributed to improper sealing of mating surfaces during engine assembly. Defect spans 2010–2015 model years. Owners report fire hazards due to oil smoking and burning on hot exhaust components.
When: Reported at 17,000, 27,300, 32,000, and 45,000 miles; some ongoing since purchase.
Symptoms owners cite: Oil dripping onto exhaust heat shield; Smoking and burning smell from engine compartment; Fire hazard with visible flames or extreme smoke; Oil burning smell when exiting vehicle; Leak from both sides of cam tower in at least one case
Repairs/costs cited: Requires dismantling part of the engine. Owner quotes $3,296 plus taxes. One owner received extended warranty coverage from Toyota after repair. Degree of severity varies from minor seeping to significant leaks.
Recalls/TSBs owners mention: Toyota has provided extended warranty coverage on some vehicles after repair (as documented in Narrative #5). Some owners report Toyota denied recall requests (Narrative #8). No manufacturer-issued recall or TSB cited in narratives.
Flex Fuel ECU Fuel Density Sensor Malfunction
The engine control unit incorrectly detects alcohol (ethanol) in fuel when none is present. The ECU is a learning unit that reverts to incorrect readings after reflashing. Causes the engine to run lean, reducing power and fuel economy. Toyota released a fix for 2012–2013 models but not for 2011.
When: Ongoing issue; owner reports problem persists across multiple ECU reflashes.
Symptoms owners cite: Check engine light; Engine misfire under power; Power loss while driving and towing; Engine running lean; Reduced fuel economy; Loss of towing capacity
Repairs/costs cited: Multiple ECU reflashes attempted at dealership (5+ times) with no permanent resolution. Owner incurs increased fuel costs and concerns about engine damage from lean running.
Recalls/TSBs owners mention: Toyota released a fix for 2012 and 2013 models but not for 2011. Toyota corporate told owner 'there are no plans to release a fix for the 2011s' and 'there is basically nothing that I can do.'
Excessive Cold-Start Idle / Piston Slap
Engine idles high on cold start (1600–1800 rpm) and fails to drop to normal operating idle (750–800 rpm) within a normal warmup period. Occurs 3+ minutes into startup. Associated with excessive piston clearance from oversized bore during manufacturing, causing piston slap noise.
When: Developed around 3 months into ownership; reported on multiple visits to dealership.
Symptoms owners cite: High idle speed at cold start (1600–1800 rpm); Engine sounds like it is 'screaming'; Idle drops to 1300 then 1100 but does not return to normal range within 5 minutes; Vehicle creeps forward when placed in gear due to high idle; Abnormal engine knock/piston slap noise; No diagnostic trouble codes stored
Repairs/costs cited: Owner requested Toyota specification for cold-start idle speed from service manager; Toyota did not provide specification. No repair attempted; dealership claimed condition is normal.
Recalls/TSBs owners mention: Toyota dealership claims high cold-start idle is normal and vehicle is safe to drive. Toyota has not acknowledged the issue or provided technical specifications.
Excessive Oil Consumption
Engine consumes oil at an abnormal rate, requiring top-ups between scheduled maintenance intervals. One owner reports consuming 1 quart per 1,000 miles at 50,000 miles, creating a risk of oil starvation.
When: Discovered at 50,000 miles.
Symptoms owners cite: Oil level drops 1 quart per 1,000 miles; Risk of low oil level between scheduled oil changes (5,000–10,000 mile intervals)
Repairs/costs cited: Owner states that waiting until next scheduled oil change would result in engine failure due to low oil level.
Valve Spring Failure
Valve spring fails without warning, rendering the engine inoperable. Failure occurred at high mileage but with no prior symptoms.
When: 136,124 miles.
Symptoms owners cite: Sudden engine failure while driving; No prior warning signs or rough running
Repairs/costs cited: Engine is ruined; owner still financing vehicle and owes over $13,000.
Recalls/TSBs owners mention: Extended warranty had expired at time of failure.
Synthesized from 25 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
My car has only 31914 mileage and I need to replace "air pumps kit" . I went to one of the dealers Toyota in southflorida named; "headquarter Toyota" and they charged me $3116.63 for this replacement.
Had engine trouble with your 2011 Toyota Tundra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2011 Toyota Tundra?
It's a documented issue but not catastrophic. 25 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 18 complaints that reported odometer mileage, most engine failures cluster between 41,192 and 100,000 miles, with the median around 83,000. A quarter of owners report trouble before 41,192; a quarter make it past 100,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Toyota/Tundra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.