AutoCodes – Toyota – P0031 2011 Toyota Camry

P0031 2011 Toyota Camry Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1

Quick Answer

Air-Fuel Ratio (A/F)sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. Common causes include Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open shorted to ground, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0031 2011 Toyota Camry indicates Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1.
Common causes
Common causes include Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open shorted to ground, Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 11,451
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 03, 2020
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Code P0031 2011 Toyota Camry Description

Air-Fuel Ratio (A/F)sensor need to reach a minimum operating temperature of 1200 degrees F to produce an accurate voltage signal. The faster the air-fuel ratio sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the air-fuel ratio sensor. The ECM controls the air-fuel ratio sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
OBDII Code P0031 2011 Toyota Camry - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1 - AutoCodes.com
P0031 2011 Toyota Camry Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1

What are the Possible Causes of the DTC P0031 2011 Toyota Camry?

  • Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 harness is open shorted to ground
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
  • Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0031 2011 Toyota Camry?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0031 2011 Toyota Camry code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0031 2011 Toyota Camry code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0031 2011 Toyota Camry Code

1. What does the OBDII code P0031 for a 2011 Toyota Camry mean?

The code P0031 indicates a problem with the Oxygen Sensor Heater Control Circuit Low in Bank 1 Sensor 1 of the vehicle.

2. What are the common symptoms of a P0031 code in a 2011 Toyota Camry?

Common symptoms include poor fuel economy, rough idling, engine misfires, and an illuminated Check Engine Light.

3. What are the possible causes of a P0031 code in a 2011 Toyota Camry?

Potential causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a problem with the engine control module (ECM).

4. How can I diagnose a P0031 code in my 2011 Toyota Camry?

Diagnosis typically involves inspecting the oxygen sensor and its wiring, checking for blown fuses, and using a scan tool to monitor sensor data and test the sensor heater circuit.

5. How can I repair a P0031 code in my 2011 Toyota Camry?

Repair options may include replacing the oxygen sensor, repairing damaged wiring or connectors, replacing blown fuses, or addressing any ECM issues.

6. Can I continue driving my 2011 Toyota Camry with a P0031 code?

It is generally not recommended to drive with a P0031 code as it can lead to reduced fuel efficiency and potential engine performance issues.

7. How much does it cost to fix a P0031 code in a 2011 Toyota Camry?

The cost of repairs for a P0031 code can vary depending on the underlying issue, but it may range from $100 to $300 or more, including parts and labor.

8. How often does the oxygen sensor need to be replaced in a 2011 Toyota Camry?

Oxygen sensors typically last between 60,000 to 100,000 miles, but they can fail earlier due to various factors like poor fuel quality or engine problems.

9. Are there any maintenance tips to prevent a P0031 code in a 2011 Toyota Camry?

Regularly servicing your vehicle, using high-quality fuel, and addressing any engine performance issues promptly can help prevent issues leading to a P0031 code.

10. Can a DIY enthusiast fix a P0031 code in a 2011 Toyota Camry?

While some may be able to diagnose and repair simple issues related to a P0031 code, it's often recommended to seek professional help for proper diagnosis and repair to avoid further complications.

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