P2440 on TOYOTA TUNDRA
AIR System Switching Valve Stuck Open Bank 1
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Toyota Tundra context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P2440.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
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 fuel, air, emissions, or auxiliary powertrain control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
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."
"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."
"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."
"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."
"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"
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on TOYOTA TUNDRA
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.