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P0137 Nissan 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 Nissan 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 40,244
How popular is this code, among other codes? Medium
What is this?
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0137 Nissan 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 Nissan - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2 - AutoCodes.com
P0137 Nissan Code - Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
What does this mean?

What are the Possible Causes of the DTC P0137 Nissan?

  • 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 Nissan?

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 Nissan 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 Nissan code?

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

Need Help with the Code?

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

Information for Specific Nissan Models

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 Nissan Code

1. What are the common symptoms of OBDII code P0137 in a Nissan related to the Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2?

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

2. What are some possible causes of OBDII code P0137 in a Nissan?

- Potential causes include a faulty oxygen sensor, wiring issues, exhaust leaks, or a malfunctioning engine computer.

3. How can I diagnose the cause of OBDII code P0137 in my Nissan?

- Use a scan tool to read the code, inspect the wiring and connections to the oxygen sensor, perform a voltage test, and check for exhaust leaks.

4. Can a dirty or clogged air filter trigger OBDII code P0137 in a Nissan?

- While a dirty air filter may affect engine performance, it is unlikely to directly cause the Heated Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2 fault code.

5. What repair steps can I take to address OBDII code P0137 in my Nissan?

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

6. Is it safe to continue driving my Nissan with OBDII code P0137 present?

- It is generally safe to drive the vehicle for a short period with this code, but prolonged driving with a faulty oxygen sensor can lead to reduced fuel efficiency and potential engine damage.

7. Can I reset the check engine light after addressing OBDII code P0137 in my Nissan?

- Yes, you can reset the check engine light using an OBDII scanner once the underlying issue causing the code has been resolved.

8. How can I prevent OBDII code P0137 from recurring in my Nissan?

- To prevent the code from reoccurring, ensure regular maintenance of your vehicle, fix any exhaust leaks promptly, and use quality oxygen sensors during replacements.

9. Will OBDII code P0137 cause my Nissan to fail an emissions test?

- Yes, having this fault code present in your Nissan may cause it to fail an emissions test, as it indicates a problem with the vehicle's emissions control system.

10. Is it possible to drive my Nissan without repairing OBDII code P0137?

- While possible, it is not recommended to ignore this fault code, as it can lead to decreased fuel efficiency, poor engine performance, and potential long-term damage to the vehicle.

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