AutoCodes – Nissan – P0137 2006 Nissan Pathfinder

P0137 2006 Nissan Pathfinder Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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: P0137 2006 Nissan Pathfinder indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 1, Rear Heated Oxygen Sensor Bank 1 harness is open or shorted, Rear Heated Oxygen Sensor Bank 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 3,787

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0137 2006 Nissan Pathfinder Description

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P0137 2006 Nissan Pathfinder - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0137 2006 Nissan Pathfinder Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0137 2006 Nissan Pathfinder?

Faulty Rear Heated Oxygen Sensor Bank 1
Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0137 2006 Nissan Pathfinder?

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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0137 2006 Nissan Pathfinder 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.

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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 2006 Nissan Pathfinder Code

1. What does the OBDII code P0137 for a 2006 Nissan Pathfinder mean?

The code P0137 indicates a Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2 issue.

2. What are the common symptoms of a P0137 error in a 2006 Nissan Pathfinder?

Common symptoms include poor fuel economy, rough idling, engine hesitation, and a possible decrease in overall engine performance.

3. What are the possible causes of a P0137 error in a 2006 Nissan Pathfinder?

Potential causes include a faulty oxygen sensor, wiring issues in the oxygen sensor circuit, exhaust leaks, or a problem with the engine's computer system.

4. How can I diagnose a P0137 error in my 2006 Nissan Pathfinder?

Diagnosing a P0137 error typically involves using an OBDII scanner to read the code, inspecting the oxygen sensor and its wiring, checking for exhaust leaks, and testing the sensor's voltage output.

5. Can I continue driving my 2006 Nissan Pathfinder with a P0137 error code?

It is not recommended to drive your vehicle with a P0137 error for an extended period, as it can lead to poor engine performance and potential damage over time.

6. How can I repair a P0137 error in my 2006 Nissan Pathfinder?

Repair options may include replacing the oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or resetting the engine's computer system.

7. Is it possible to reset the P0137 error code in a 2006 Nissan Pathfinder without making any repairs?

While you can reset the error code using an OBDII scanner, it is crucial to address the underlying issue causing the P0137 code for long-term vehicle health.

8. How much does it cost to fix a P0137 error in a 2006 Nissan Pathfinder?

The cost of fixing a P0137 error can vary depending on the specific cause of the issue, but it may involve expenses for parts and labor at a repair shop.

9. Can a DIY enthusiast repair a P0137 error in a 2006 Nissan Pathfinder?

Some individuals with automotive repair experience may be able to address a P0137 error themselves, especially if they have the necessary tools and knowledge of oxygen sensor systems.

10. How often should I check the oxygen sensors in my 2006 Nissan Pathfinder to prevent P0137 errors?

It is recommended to inspect your oxygen sensors during regular vehicle maintenance intervals or whenever you notice symptoms of poor engine performance to help prevent P0137 errors.