P0138 on TOYOTA COROLLA — O2 Sensor Circuit High Voltage Bank 1 Sensor 2

Q: "What does P0138 mean on a TOYOTA COROLLA?"

"P0138 indicates: O2 Sensor Circuit High Voltage Bank 1 Sensor 2. This is a fuel and air metering code. 2 TOYOTA COROLLA owners have reported this to NHTSA."

Q: "What are the most common causes of P0138 on TOYOTA COROLLA?"

"Based on 2 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc). These percentages are based on the component field in owner complaints."

Q: "Is P0138 serious on my TOYOTA COROLLA?"

"Of 2 NHTSA reports for this code on TOYOTA COROLLA, 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 COROLLA shows P0138?"

"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 P0138 Means on Your TOYOTA COROLLA

P0138 is a diagnostic trouble code indicating: O2 Sensor Circuit High Voltage Bank 1 Sensor 2. This code relates to the fuel and air metering system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 TOYOTA COROLLA owners have reported this issue to NHTSA across model years 2009. Most reports come from the 2009 model year. The most commonly reported component is Electronic Stability Control (Esc) (100.0% of reports).

Real TOYOTA COROLLA Owner Reports

Source: NHTSA Complaints Database

"My check engine light has come on and off sporadically, since the vehicle in question was bought of the showroom floor from sunny side toyota since march 2009 all the way up to the present."

— 2009 TOYOTA COROLLA owner · ELECTRONIC STABILITY CONTROL (ESC) · Filed 10/02/2017

"My ecm constantly have issues with stabilizing the vehicle on a daily occurrence. when it works as it should the car feels stable like it has added weight and the steering is responsive."

— 2009 TOYOTA COROLLA owner · ELECTRONIC STABILITY CONTROL (ESC) · Filed 09/01/2015

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

📊 Complaint Trend by Model Year

2

'09

Common Causes on TOYOTA COROLLA

Based on NHTSA complaint component analysis for this vehicle.

ELECTRONIC STABILITY CONTROL (ESC) 100%

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 P0138 mean on a TOYOTA COROLLA? ▾

P0138 indicates: O2 Sensor Circuit High Voltage Bank 1 Sensor 2. This is a fuel and air metering code. 2 TOYOTA COROLLA owners have reported this to NHTSA.

What are the most common causes of P0138 on TOYOTA COROLLA? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc). These percentages are based on the component field in owner complaints.

Is P0138 serious on my TOYOTA COROLLA? ▾

Of 2 NHTSA reports for this code on TOYOTA COROLLA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my TOYOTA COROLLA shows P0138? ▾

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.

P0138 on Other Vehicles

CHEVROLET MALIBU

3 reports

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