P2240 on Toyota Tundra
O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 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 P2240.
- 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 P2240 Means on Your Toyota Tundra
P2240 is a diagnostic trouble code indicating: O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. This code relates to the powertrain 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
"Failed inspection code p2440,2441 took to toyota dealer checked p2240 .need to replace air pump,air switch valve bank and bank 2.cost $2700 . this is second time failed. last year air pump failed. toyota dealer estimated $4000 replace. i did buy air pump ang replace it ,cost me $ 1100."
"2012 tundra 4.6 v8 my truck will go into limp mode and the 4lo light flashes, check engine, and trac off lights were all on. almost complete lose of power will happen. in traffic i end up blocking ever vehicle behind me, because the truck will not reach the speed limit."
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.