P2240 on TOYOTA TUNDRA — O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1

Q: "What does P2240 mean on a TOYOTA TUNDRA?"

"P2240 indicates: O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. This is a powertrain code. 3 TOYOTA TUNDRA owners have reported this to NHTSA."

Q: "What are the most common causes of P2240 on TOYOTA TUNDRA?"

"Based on 3 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling,Equipment, Engine, Electrical System,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P2240 serious on my TOYOTA TUNDRA?"

"Of 3 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 P2240?"

"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 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.

3 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

"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."

— 2007 TOYOTA TUNDRA owner · ENGINE AND ENGINE COOLING,EQUIPMENT · Filed 03/16/2011

"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."

— 2012 TOYOTA TUNDRA owner · ELECTRICAL SYSTEM,ENGINE · Filed 07/10/2019

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

📊 Complaint Trend by Model Year

1

'07

1

'08

1

'12

Common Causes on TOYOTA TUNDRA

Based on NHTSA complaint component analysis for this vehicle.

ENGINE and ENGINE COOLING,EQUIPMENT 33.3%

ENGINE 33.3%

ELECTRICAL SYSTEM,ENGINE 33.3%

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 P2240 mean on a TOYOTA TUNDRA? ▾

P2240 indicates: O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. This is a powertrain code. 3 TOYOTA TUNDRA owners have reported this to NHTSA.

What are the most common causes of P2240 on TOYOTA TUNDRA? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling,Equipment, Engine, Electrical System,Engine. These percentages are based on the component field in owner complaints.

Is P2240 serious on my TOYOTA TUNDRA? ▾

Of 3 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 P2240? ▾

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.

P2240 on Other Vehicles

→ All codes reported on TOYOTA TUNDRA