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P0137 2008 Nissan Maxima Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Quick Answer

The P0137 diagnostic trouble code (DTC) for a 2008 Nissan Maxima indicates a problem with the Heated Oxygen Sensor (HO2S) circuit on Bank 1 Sensor 2. Common causes include Faulty HO2S, Wiring or connector issues, 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 2008 Nissan Maxima indicates Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
Common causes
Common causes include Faulty HO2S, Wiring or connector issues, 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 16, 2024
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Code P0137 2008 Nissan Maxima Description

The P0137 diagnostic trouble code (DTC) for a 2008 Nissan Maxima indicates a problem with the Heated Oxygen Sensor (HO2S) circuit on Bank 1 Sensor 2. This sensor is responsible for monitoring the oxygen levels in the exhaust gases after they have passed through the catalytic converter. The HO2S provides feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion efficiency.

OBDII Code P0137 2008 Nissan Maxima - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
P0137 2008 Nissan Maxima Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2

Common Causes of P0137 2008 Nissan Maxima

  1. Faulty HO2S
  2. Wiring or connector issues
  3. Exhaust leaks near the sensor
  4. Engine misfires
  5. ECM software issues

Symptoms of P0137 2008 Nissan Maxima

  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 2008 Nissan Maxima

  1. Begin by diagnosing the root cause of the issue using a scan tool to confirm the P0137 code.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Test the HO2S on Bank 1 Sensor 2 to ensure it is functioning properly; replace if necessary.
  4. Check for exhaust leaks near the sensor and repair any leaks found.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0137 2008 Nissan Maxima

The typical repair costs for addressing a P0137 code on a 2008 Nissan Maxima can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to ensure a competitive price. Additionally, factors such as the vehicle's make and model, as well as the engine type, can also impact the overall repair cost.

What does this mean?

Tech Notes for P0137 2008 Nissan Maxima

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 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0137 on a 2008 Nissan Maxima?

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

2. What does the OBDII code P0137 "Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2" indicate?

- This code indicates a low voltage condition in the downstream oxygen sensor located after the catalytic converter on bank 1 of the engine.

3. What are the possible causes of OBDII code P0137 on a 2008 Nissan Maxima?

- Common causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, a failing catalytic converter, or issues with the engine control module (ECM).

4. How can I diagnose the root cause of OBDII code P0137 on my 2008 Nissan Maxima?

- Diagnose by inspecting the oxygen sensor wiring, checking for exhaust leaks, testing the oxygen sensor voltage, and scanning for related codes in the ECM.

5. Can I continue driving my 2008 Nissan Maxima with OBDII code P0137 active?

- While you may be able to drive the vehicle, it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

6. Is it possible to reset the OBDII code P0137 on a 2008 Nissan Maxima without fixing the underlying issue?

- Yes, you can clear the code using an OBDII scanner, but the check engine light will likely reappear if the root cause of the problem is not resolved.

7. What is the typical repair process for fixing OBDII code P0137 on a 2008 Nissan Maxima?

- The repair process usually involves replacing the bank 1 sensor 2 oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or addressing other related issues identified during diagnosis.

8. How much does it cost to repair OBDII code P0137 on a 2008 Nissan Maxima?

- The cost can vary depending on the specific cause of the issue, but replacing the oxygen sensor typically ranges from $100 to $300, while addressing other underlying problems may increase the total repair cost.

9. Can a DIY enthusiast fix OBDII code P0137 on a 2008 Nissan Maxima?

- Yes, if you have the necessary tools and mechanical skills, you can attempt to replace the oxygen sensor or repair wiring issues yourself. However, professional diagnosis is recommended for accurate troubleshooting.

10. How often should the oxygen sensors be replaced in a 2008 Nissan Maxima to prevent OBDII code P0137 from recurring?

- Oxygen sensors typically last around 60,000 to 100,000 miles, but it is recommended to follow the manufacturer's maintenance schedule and replace them as needed to avoid issues like OBDII code P0137.

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