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Engine-Codes – Nissan – P0138 2011 Nissan Rogue

P0138 2011 Nissan Rogue Code - HO2S12 Circuit High Voltage

Quick Answer

The P0138 diagnostic trouble code (DTC) for a 2011 Nissan Rogue indicates an issue with the HO2S12 (Heated Oxygen Sensor 1 Bank 1 Sensor 2) circuit having high voltage. Common causes include Faulty HO2S12 sensor, Wiring issues such as shorts or open circuits, ECM malfunction. 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 2011 Nissan Rogue indicates HO2S12 Circuit High Voltage.
Common causes
Common causes include Faulty HO2S12 sensor, Wiring issues such as shorts or open circuits, ECM malfunction.
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 12, 2024
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Code P0138 2011 Nissan Rogue Description

The P0138 diagnostic trouble code (DTC) for a 2011 Nissan Rogue indicates an issue with the HO2S12 (Heated Oxygen Sensor 1 Bank 1 Sensor 2) circuit having high voltage. The HO2S12 sensor is responsible for monitoring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When the voltage from the sensor is higher than the specified range, it triggers the P0138 code.

OBDII Code P0138 2011 Nissan Rogue - HO2S12 Circuit High Voltage
P0138 2011 Nissan Rogue Code - HO2S12 Circuit High Voltage

Common Causes of P0138 2011 Nissan Rogue

  1. Faulty HO2S12 sensor
  2. Wiring issues such as shorts or open circuits
  3. ECM malfunction
  4. Exhaust leaks near the sensor
  5. Contaminated sensor due to oil or coolant leaks

Symptoms of P0138 2011 Nissan Rogue

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Check Engine Light illuminated
  5. Increased emissions

How to Fix P0138 2011 Nissan Rogue

  1. Begin by diagnosing the root cause of the high voltage reading, which may involve testing the HO2S12 sensor, inspecting the wiring for damage, and checking the ECM for faults.
  2. Replace the HO2S12 sensor if it is found to be faulty, ensuring that the new sensor is compatible with the vehicle's make and model.
  3. Repair any damaged wiring or connectors to ensure a secure connection between the sensor and the ECM.
  4. Clear the DTC using a scan tool and test drive the vehicle to verify that the issue has been resolved.
  5. If the P0138 code persists, further diagnostics may be required to pinpoint the exact cause of the high voltage reading.

Cost to Fix P0138 2011 Nissan Rogue

The typical repair costs for addressing a P0138 code on a 2011 Nissan Rogue can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to obtain quotes from local repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P0138 2011 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.

Need more information about the P0138 2011 Nissan Rogue code?

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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 2011 Nissan Rogue Code

1. What does OBDII code P0138 for a 2011 Nissan Rogue indicate?

- OBDII code P0138 in a 2011 Nissan Rogue indicates a high voltage condition in the HO2S12 (Heated Oxygen Sensor Bank 1 Sensor 2) circuit.

2. What are the common symptoms of OBDII code P0138 in a 2011 Nissan Rogue?

- Common symptoms of P0138 in a 2011 Nissan Rogue include poor fuel economy, rough idling, and potential stalling.

3. What are the potential causes of OBDII code P0138 in a 2011 Nissan Rogue?

- The potential causes of P0138 in a 2011 Nissan Rogue include a faulty HO2S12 sensor, wiring issues, exhaust leaks, or a problem with the engine's fuel system.

4. How can I diagnose the cause of OBDII code P0138 in my 2011 Nissan Rogue?

- To diagnose P0138 in a 2011 Nissan Rogue, you can use a scan tool to monitor the live data from the HO2S12 sensor and check for any wiring or exhaust system issues.

5. Can a dirty or contaminated HO2S12 sensor trigger OBDII code P0138 in a 2011 Nissan Rogue?

- Yes, a dirty or contaminated HO2S12 sensor can lead to incorrect readings and trigger P0138 in a 2011 Nissan Rogue.

6. How can I fix OBDII code P0138 in my 2011 Nissan Rogue?

- To fix P0138 in a 2011 Nissan Rogue, you may need to replace the HO2S12 sensor, repair any wiring issues, fix exhaust leaks, or address any fuel system problems.

7. Is it safe to continue driving my 2011 Nissan Rogue with OBDII code P0138?

- It is not recommended to continue driving your 2011 Nissan Rogue with P0138 as it can lead to poor engine performance and potential damage if left unresolved.

8. Can a DIY enthusiast repair OBDII code P0138 in a 2011 Nissan Rogue?

- A DIY enthusiast with the necessary tools and knowledge can attempt to repair P0138 in a 2011 Nissan Rogue, but it is recommended to seek professional help for accurate diagnosis and proper repairs.

9. Will resetting the OBDII system clear the P0138 code in my 2011 Nissan Rogue?

- Resetting the OBDII system may temporarily clear the P0138 code in your 2011 Nissan Rogue, but if the underlying issue is not addressed, the code is likely to reappear.

10. How much does it typically cost to repair OBDII code P0138 in a 2011 Nissan Rogue?

- The cost to repair P0138 in a 2011 Nissan Rogue can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

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