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Engine-Codes – Nissan – P0137 2007 Nissan Sentra

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

Quick Answer

The P0137 code for a 2007 Nissan Sentra indicates a problem with the Heated Oxygen Sensor (HO2S) circuit having low voltage for Bank 1 Sensor 2. Common causes include Faulty Heated Oxygen Sensor (Bank 1 Sensor 2), Wiring or connector issues in the HO2S 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 Sentra indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty Heated Oxygen Sensor (Bank 1 Sensor 2), Wiring or connector issues in the HO2S 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 14, 2024
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Code P0137 2007 Nissan Sentra Description

The P0137 code for a 2007 Nissan Sentra indicates a problem with the Heated Oxygen Sensor (HO2S) circuit having low voltage for Bank 1 Sensor 2. The HO2S is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. Bank 1 Sensor 2 refers to the sensor located downstream of the catalytic converter on the side of the engine where cylinder 1 is located.

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

Common Causes of P0137 2007 Nissan Sentra

  1. Faulty Heated Oxygen Sensor (Bank 1 Sensor 2)
  2. Wiring or connector issues in the HO2S circuit
  3. Exhaust leaks near the sensor
  4. Contaminated sensor due to oil or coolant leaks
  5. Issues with the ECM or related components

Symptoms of P0137 2007 Nissan Sentra

  1. Decreased fuel efficiency
  2. Rough idling or engine misfires
  3. Check Engine Light illuminated
  4. Poor acceleration or sluggish performance
  5. Increased emissions

How to Fix P0137 2007 Nissan Sentra

  1. Begin by locating the Bank 1 Sensor 2 HO2S, typically found downstream of the catalytic converter.
  2. Inspect the wiring and connector for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the HO2S using a multimeter to check for proper voltage output. Replace the sensor if it is faulty.
  4. Clear the diagnostic trouble codes from the ECM using a scan tool.
  5. After repairs are completed, drive the vehicle to ensure the code does not return and that the engine performance is back to normal.

Cost to Fix P0137 2007 Nissan Sentra

The cost of repairing a P0137 code on a 2007 Nissan Sentra can vary depending on the cause of the issue and the specific parts needed. On average, the cost of replacing a Heated Oxygen Sensor can range from $100 to $300, including parts and labor. Additional costs may apply if wiring repairs or ECM diagnostics are necessary. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Labor rates can vary, with typical rates ranging from $80 to $150 per hour.

What does this mean?

Tech Notes for P0137 2007 Nissan Sentra

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 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.

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