P2440 on TOYOTA TUNDRA — AIR System Switching Valve Stuck Open Bank 1

Q: "What does P2440 mean on a TOYOTA TUNDRA?"

"P2440 indicates: AIR System Switching Valve Stuck Open Bank 1. This is a powertrain code. 21 TOYOTA TUNDRA owners have reported this to NHTSA."

Q: "What are the most common causes of P2440 on TOYOTA TUNDRA?"

"Based on 21 NHTSA reports, the most commonly cited components are: Engine, Unknown Or Other, Vehicle Speed Control,Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P2440 serious on my TOYOTA TUNDRA?"

"Of 21 NHTSA reports for this code on TOYOTA TUNDRA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my TOYOTA TUNDRA shows P2440?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P2440 Means on Your TOYOTA TUNDRA

P2440 is a diagnostic trouble code indicating: AIR System Switching Valve Stuck Open Bank 1. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

21 TOYOTA TUNDRA owners have reported this issue to NHTSA across model years 2007-2012. Most reports come from the 2007, 2008 model years.

Real TOYOTA TUNDRA Owner Reports

Source: NHTSA Complaints Database

"My traction control light has came on and stays on, my vsc light continuously flashes. the code that it keeps sending is p2440 and p2441 (secondary injection). i had went overseas with the military for two years and came back last year to change the battery and this started."

— 2007 TOYOTA TUNDRA owner · VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM · Filed 02/11/2017

"My vsc off light has been blinking when i started my truck when i got off work at 3:00p.m. central time. my check engine light is on as well. i brought my truck to auto zone for a diagnostics test and came up with code p2440."

— 2007 TOYOTA TUNDRA owner · ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 09/14/2015

"My check engine light came on and i was not able to accelerate beyond 40 mph. when i had the code read it came back as it was p2440 secondary air injection system switching valve stuck open."

— 2007 TOYOTA TUNDRA owner · UNKNOWN OR OTHER · Filed 04/01/2015

"I got an obd ii code p2440 secondary air injection valve stuck open as i was pulling out of the driveway and almost got stuck in the road."

— 2007 TOYOTA TUNDRA owner · ENGINE · Filed 02/05/2015

"This is a recurring problem. initially, my truck was taken to a toyota dealer service center on 3/15/2012 to an issue with my check engine light, slip indicator light, 4-wheel drive (4lo), vsc off all came on, sluggish acceleration/loss of acceleration occurred when driven & my gas mileage/fuel eff"

— 2007 TOYOTA TUNDRA owner · VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM · Filed 03/15/2012

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

13

'07

3

'08

2

'11

3

'12

Common Causes on TOYOTA TUNDRA

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 23.8%

UNKNOWN or OTHER 19%

VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM 9.5%

ELECTRONIC STABILITY CONTROL (ESC),ENGINE 4.8%

VEHICLE SPEED CONTROL,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 4.8%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P2440 mean on a TOYOTA TUNDRA? ▾

P2440 indicates: AIR System Switching Valve Stuck Open Bank 1. This is a powertrain code. 21 TOYOTA TUNDRA owners have reported this to NHTSA.

What are the most common causes of P2440 on TOYOTA TUNDRA? ▾

Based on 21 NHTSA reports, the most commonly cited components are: Engine, Unknown Or Other, Vehicle Speed Control,Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P2440 serious on my TOYOTA TUNDRA? ▾

Of 21 NHTSA reports for this code on TOYOTA TUNDRA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my TOYOTA TUNDRA shows P2440? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

P2440 on Other Vehicles

→ All codes reported on TOYOTA TUNDRA