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P0137 2007 Nissan Pathfinder Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder refers to a fault in the Heated Oxygen Sensor (HO2S) circuit for Bank 1 Sensor 2. Common causes include Faulty Bank 1 Sensor 2 HO2S, Wiring or connector issues in the 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 2007 Nissan Pathfinder indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty Bank 1 Sensor 2 HO2S, Wiring or connector issues in the 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 Sep 13, 2024
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Code P0137 2007 Nissan Pathfinder Description

The P0137 diagnostic trouble code (DTC) for a 2007 Nissan Pathfinder refers to a fault in the Heated Oxygen Sensor (HO2S) circuit for Bank 1 Sensor 2. This sensor is located downstream of the catalytic converter and is responsible for monitoring the oxygen levels in the exhaust gases. The purpose of this sensor is to ensure that the catalytic converter is functioning properly and to provide feedback to the engine control module (ECM) for optimal fuel efficiency and emissions control.

OBDII Code P0137 2007 Nissan Pathfinder - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
P0137 2007 Nissan Pathfinder Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 2007 Nissan Pathfinder

  1. Faulty Bank 1 Sensor 2 HO2S
  2. Wiring or connector issues in the sensor circuit
  3. Exhaust leaks near the sensor
  4. Contaminated sensor due to oil or coolant leaks
  5. ECM software or hardware issues

Symptoms of P0137 2007 Nissan Pathfinder

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Check Engine Light illuminated
  5. Failed emissions test

How to Fix P0137 2007 Nissan Pathfinder

  1. Begin by diagnosing the root cause of the P0137 code using a scan tool to monitor the sensor's voltage readings.
  2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as needed.
  3. Check for exhaust leaks near the sensor and repair if necessary.
  4. Replace the Bank 1 Sensor 2 HO2S if it is found to be faulty.
  5. Clear the DTC and test drive the vehicle to ensure the code does not return.

Cost to Fix P0137 2007 Nissan Pathfinder

The cost of repairing a P0137 code on a 2007 Nissan Pathfinder can vary depending on the specific cause of the issue. On average, the cost of replacing a Heated Oxygen Sensor can range from $100 to $300 for the part alone. Labor costs can add an additional $50 to $150, bringing the total repair cost to approximately $150 to $450. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and any additional repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

What does this mean?

Tech Notes for P0137 2007 Nissan Pathfinder

Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem.

When is the Code Detected?

The P0137 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively low for an extended period of time.

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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 P0137 2007 Nissan Pathfinder Code

1. What does OBDII code P0137 mean on a 2007 Nissan Pathfinder?

This code indicates a low voltage condition in the heated oxygen sensor (HO2S) circuit of Bank 1 Sensor 2, located after the catalytic converter.

2. What are the common symptoms of a P0137 code in a 2007 Nissan Pathfinder?

Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light on the dashboard.

3. What are the possible causes of a P0137 code in a 2007 Nissan Pathfinder?

Possible causes include a faulty oxygen sensor, damaged wiring or connectors in the sensor circuit, exhaust leaks, or issues with the engine's fuel system.

4. How can I diagnose a P0137 code in my 2007 Nissan Pathfinder?

Diagnosis typically involves using an OBDII scanner to read the code, inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and testing the sensor's voltage output.

5. Can I drive my 2007 Nissan Pathfinder with a P0137 code?

It is not recommended to drive with a P0137 code for an extended period, as it can lead to poor engine performance and potential damage to the catalytic converter.

6. How can I repair a P0137 code in my 2007 Nissan Pathfinder?

Repair options may include replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or addressing any underlying fuel system issues.

7. Are there any DIY tips for fixing a P0137 code in a 2007 Nissan Pathfinder?

While some simple tasks like checking and tightening connections can be done by DIY enthusiasts, replacing the oxygen sensor or dealing with complex wiring issues may require professional help.

8. How much does it cost to fix a P0137 code in a 2007 Nissan Pathfinder?

The cost of fixing a P0137 code can vary depending on the underlying issue, but it may range from around $100 for a DIY repair to a few hundred dollars if professional diagnosis and parts replacement are needed.

9. Will resetting the check engine light clear a P0137 code in a 2007 Nissan Pathfinder?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P0137 code is not addressed, the light is likely to come back on.

10. How important is it to fix a P0137 code in a 2007 Nissan Pathfinder?

It is essential to address a P0137 code promptly to ensure optimal engine performance, fuel efficiency, and to prevent potential damage to other components like the catalytic converter.

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