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P0138 2010 Nissan Rogue Code - HO2S12 Circuit High Voltage

Quick Answer

The P0138 diagnostic trouble code (DTC) for the 2010 Nissan Rogue specifically refers to the Oxygen Sensor Circuit High Voltage for the second sensor on the first bank of the engine. Common causes include Faulty oxygen sensor, Wiring or connector damage, Exhaust leaks. 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
P0138 2010 Nissan Rogue indicates HO2S12 Circuit High Voltage.
Common causes
Common causes include Faulty oxygen sensor, Wiring or connector damage, Exhaust leaks.
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 11, 2024
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Code P0138 2010 Nissan Rogue Description

The P0138 diagnostic trouble code (DTC) for the 2010 Nissan Rogue specifically refers to the Oxygen Sensor Circuit High Voltage for the second sensor on the first bank of the engine. This code indicates that the oxygen sensor, also known as the heated oxygen sensor (HO2S) or lambda sensor, is detecting a higher than normal voltage from the exhaust gases. The oxygen sensor plays a crucial role in monitoring the air-fuel ratio of the engine and providing feedback to the engine control module (ECM) to adjust fuel delivery for optimal performance and emissions control.

OBDII Code P0138 2010 Nissan Rogue - HO2S12 Circuit High Voltage
P0138 2010 Nissan Rogue Code - HO2S12 Circuit High Voltage

Common Causes of P0138 2010 Nissan Rogue

  1. Faulty oxygen sensor
  2. Wiring or connector damage
  3. Exhaust leaks
  4. Vacuum leaks
  5. Fuel system issues

Symptoms of P0138 2010 Nissan Rogue

  1. Decreased fuel economy
  2. Rough idling or hesitation during acceleration
  3. Check Engine Light illuminated on the dashboard
  4. Increased emissions output
  5. Engine stalling or difficulty starting

How to Fix P0138 2010 Nissan Rogue

  1. Begin by locating the HO2S12 sensor on the exhaust system.
  2. Check the wiring and connectors for any signs of damage or corrosion.
  3. Test the sensor using a multimeter to determine if it is functioning properly.
  4. Replace the oxygen sensor if it is found to be faulty or if the wiring/connectors are damaged.
  5. Clear the DTC from the ECM memory using a scan tool and perform a road test to ensure the issue has been resolved.

Cost to Fix P0138 2010 Nissan Rogue

The typical repair cost for addressing a P0138 code on a 2010 Nissan Rogue can range from $150 to $300, depending on the cost of the oxygen sensor and labor charges. Additional costs may apply if other components need to be replaced or if further diagnosis is required. It is recommended to consult with a certified mechanic or auto repair shop to get a more accurate estimate based on your specific situation. Labor rates can vary between $80 to $150 per hour, so it's important to consider this when budgeting for the repair.

What does this mean?

Tech Notes for P0138 2010 Nissan Rogue

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

When is the Code Detected?

The P0138 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high 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 P0138 2010 Nissan Rogue Code

1. What does OBDII code P0138 for a 2010 Nissan Rogue mean?

This code, HO2S12 Circuit High Voltage, indicates a problem with the oxygen sensor (O2 sensor) located in the downstream position on bank 1 of your vehicle.

2. What are the common symptoms of OBDII code P0138 in a Nissan Rogue?

Common symptoms include decreased fuel efficiency, rough idling, poor engine performance, and the illumination of the check engine light on the dashboard.

3. What are the possible causes of OBDII code P0138 in a 2010 Nissan Rogue?

The most common causes include a faulty oxygen sensor, wiring issues in the HO2S12 circuit, exhaust leaks near the sensor, or an engine running too rich.

4. How can I diagnose the OBDII code P0138 issue in my Nissan Rogue?

Diagnosis typically involves inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and using a scan tool to monitor sensor data and voltage readings.

5. Can I continue driving my Nissan Rogue with OBDII code P0138?

It's not recommended to drive your vehicle for an extended period with this code as it can lead to further damage and poor fuel economy. Get it diagnosed and repaired as soon as possible.

6. How can I repair OBDII code P0138 in my 2010 Nissan Rogue?

Repair options may include replacing the faulty oxygen sensor, repairing or replacing damaged wiring, fixing any exhaust leaks, and resetting the code with a scan tool.

7. Is it possible to reset OBDII code P0138 in a Nissan Rogue without fixing the issue?

While you can clear the code using a scan tool, the underlying problem must be addressed. Resetting the code without fixing the issue can lead to recurring check engine light illumination.

8. Can a DIY enthusiast fix OBDII code P0138 in a Nissan Rogue?

Depending on your mechanical skills and access to tools, you may be able to replace the oxygen sensor or address wiring issues yourself. However, consulting a professional is recommended for accurate diagnosis and repair.

9. How much does it cost to repair OBDII code P0138 in a 2010 Nissan Rogue?

The cost can vary based on the underlying issue, parts needed, and labor rates. On average, repairing this code may cost between $150 to $400 at a dealership or repair shop.

10. How often does OBDII code P0138 occur in a 2010 Nissan Rogue?

While not extremely common, this code can occur due to various factors such as sensor wear, wiring degradation, or exhaust system issues. Regular maintenance can help prevent such issues.

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