Engine-Codes.com
Engine-Codes – Toyota – P0137 Toyota

P0137 Toyota Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 code for Toyota vehicles indicates a low voltage condition in the oxygen sensor circuit for Bank 1 Sensor 2. Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the sensor. 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
P0137 Toyota indicates Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty oxygen sensor, Wiring or connector issues in the oxygen sensor circuit, Exhaust leaks near the sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0137 Toyota Description

The P0137 code for Toyota vehicles indicates a low voltage condition in the oxygen sensor circuit for Bank 1 Sensor 2. This sensor is located after the catalytic converter and is responsible for monitoring the oxygen levels in the exhaust gases. The engine control module (ECM) uses this information to adjust the air-fuel mixture for optimal combustion. A low voltage reading from the sensor can lead to incorrect fuel trim adjustments, potentially causing issues with engine performance, fuel efficiency, and emissions output.

OBDII Code P0137 Toyota - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
P0137 Toyota Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 Toyota

  1. Faulty oxygen sensor
  2. Wiring or connector issues in the oxygen sensor circuit
  3. Exhaust leaks near the sensor
  4. Engine coolant leaks contaminating the sensor
  5. ECM software or hardware issues

Symptoms of P0137 Toyota

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Illuminated check engine light
  5. Failed emissions test

How to Fix P0137 Toyota

  1. Use an OBD-II scanner to confirm the P0137 code and diagnose the specific issue.
  2. Inspect the wiring and connectors in the oxygen sensor circuit for damage or corrosion. Repair or replace as needed.
  3. Check for exhaust leaks near the sensor and repair as necessary.
  4. Replace the Bank 1 Sensor 2 oxygen sensor if it is faulty or showing signs of wear.
  5. Clear the error code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0137 Toyota

The cost of repairing a P0137 code on a Toyota can vary depending on the exact cause of the issue and the specific model of the vehicle. In general, the cost of a new oxygen sensor can range from $50 to $200, depending on the quality and brand. Labor costs for sensor replacement and diagnostic time can add an additional $100 to $300. Overall, a typical repair for this code could cost anywhere from $150 to $500. It is recommended to consult with a qualified mechanic or dealership for an accurate estimate based on your specific situation.

What does this mean?

Tech Notes for P0137 Toyota

Replacing the Oxygen Sensor Bank 1 Sensor 2 (Rear Oxygen Sensor Bank 1 or Downstream Oxygen Sensor Bank 1) usually takes care of the problem.





User Submitted Video

Need more information about the P0137 Toyota code?

Need more information on how to fix the P0137 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0137 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

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 P0137 Toyota Code

1. What are the common symptoms of OBDII code P0137 for a Toyota?

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

2. What causes the OBDII code P0137 in a Toyota?

The code P0137 typically indicates a malfunction in the oxygen sensor circuit of Bank 1 Sensor 2, which could be caused by a faulty oxygen sensor, wiring issues, or a problem with the engine's computer.

3. How serious is the OBDII code P0137 in a Toyota?

While the code itself may not cause immediate harm to the vehicle, ignoring it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

4. Can I still drive my Toyota with the OBDII code P0137?

It is generally safe to drive the vehicle with the code P0137, but it is recommended to address the underlying issue as soon as possible to prevent further complications.

5. How can I diagnose the OBDII code P0137 in my Toyota?

Diagnosing the code usually involves checking the oxygen sensor's voltage readings, inspecting the sensor and its wiring for damage, and using a scan tool to monitor sensor data.

6. Is it possible to repair the OBDII code P0137 in a Toyota myself?

Depending on your skill level and access to tools, you may be able to replace the oxygen sensor or repair the wiring yourself. However, seeking professional help is recommended for an accurate diagnosis and proper repair.

7. What is the typical cost to repair the OBDII code P0137 in a Toyota?

The cost of repair can vary depending on the cause of the issue, but it usually ranges from $100 to $300 for parts and labor when replacing the oxygen sensor.

8. How long does it take to fix the OBDII code P0137 in a Toyota?

Repairing the code P0137 can typically be done within a few hours, but it may take longer if additional troubleshooting is required to pinpoint the exact cause of the problem.

9. Can a dirty air filter cause the OBDII code P0137 in a Toyota?

While a dirty air filter can affect engine performance, it is not a direct cause of the code P0137. Focus on inspecting the oxygen sensor and related components for issues.

10. Will resetting the Check Engine Light resolve the OBDII code P0137 in a Toyota?

Resetting the light may temporarily turn it off, but if the underlying issue causing the code is not addressed, the light will likely come back on. It's important to diagnose and fix the root cause of the problem.

Discuss the causes and fixes for P0137 Toyota OBDII Code

Submit a New Comment