AutoCodes – Nissan – P0137 2007 Nissan Sentra

P0137 2007 Nissan Sentra 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 2007 Nissan Sentra 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,600

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0137 2007 Nissan Sentra 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 2007 Nissan Sentra - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com — P0137 2007 Nissan Sentra Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0137 2007 Nissan Sentra?

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 2007 Nissan Sentra?

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 2007 Nissan Sentra 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 P0137 2007 Nissan Sentra code?

Need more information on how to fix the P0137 2007 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0137 2007 Nissan Sentra code diagnosed by a professional: Find a repair shop in your area

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 Sentra Code

1. What are the common symptoms of OBDII code P0137 in a 2007 Nissan Sentra?

- Common symptoms include poor fuel economy, rough idling, and a noticeable decrease in engine performance.

2. What does the OBDII code P0137 indicate in a 2007 Nissan Sentra?

- The code P0137 indicates a low voltage condition in the heated oxygen sensor circuit of Bank 1 Sensor 2 in the exhaust system.

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

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

4. How can I diagnose the OBDII code P0137 in my 2007 Nissan Sentra?

- Diagnosis involves using an OBDII scanner to retrieve the code, visually inspecting the oxygen sensor and its connections, and testing the sensor's voltage output.

5. Can I continue driving my 2007 Nissan Sentra with the OBDII code P0137 present?

- It is not recommended to drive with the code present, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

6. How can I repair the OBDII code P0137 in my 2007 Nissan Sentra?

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

7. Is it possible to reset the OBDII code P0137 in a 2007 Nissan Sentra without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it will likely reappear if the root cause of the low voltage condition is not addressed.

8. How long does it typically take to repair the OBDII code P0137 in a 2007 Nissan Sentra?

- Repair time can vary depending on the exact cause of the issue, but it may take anywhere from 30 minutes to a few hours to complete the necessary repairs.

9. Can a DIY enthusiast fix the OBDII code P0137 in a 2007 Nissan Sentra?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to successfully diagnose and repair the issue, especially if it involves simple tasks like sensor replacement or connector repair.

10. Are there any precautions to take when working on the OBDII code P0137 in a 2007 Nissan Sentra?

- When working on the oxygen sensor or related components, it is important to disconnect the battery, work in a well-ventilated area, and follow proper safety protocols to avoid injury or damage to the vehicle.