Engine-CodesNissan – P0038 2010 Nissan Sentra

P0038 2010 Nissan Sentra Code - HO2S12 Heater Control Circuit High

Quick Answer

The P0038 diagnostic trouble code (DTC) for a 2010 Nissan Sentra refers to the HO2S12 (Heated Oxygen Sensor 1 Bank 1 Sensor 2) Heater Control Circuit High. Common causes include Faulty oxygen sensor heater element, Wiring issues such as shorts or open circuits in the heater circuit, Blown fuse related to the oxygen sensor heater circuit. 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
P0038 2010 Nissan Sentra indicates HO2S12 Heater Control Circuit High.
Common causes
Common causes include Faulty oxygen sensor heater element, Wiring issues such as shorts or open circuits in the heater circuit, Blown fuse related to the oxygen sensor heater circuit.
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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0038 2010 Nissan Sentra Description

The P0038 diagnostic trouble code (DTC) for a 2010 Nissan Sentra refers to the HO2S12 (Heated Oxygen Sensor 1 Bank 1 Sensor 2) Heater Control Circuit High. This code indicates that the engine control module (ECM) has detected a high voltage condition in the heater control circuit of the downstream oxygen sensor located after the catalytic converter.

OBDII Code P0038 2010 Nissan Sentra - HO2S12 Heater Control Circuit High
P0038 2010 Nissan Sentra Code - HO2S12 Heater Control Circuit High

Common Causes of P0038 2010 Nissan Sentra

  1. Faulty oxygen sensor heater element
  2. Wiring issues such as shorts or open circuits in the heater circuit
  3. Blown fuse related to the oxygen sensor heater circuit
  4. ECM software or hardware issues
  5. Corrosion or contamination in the sensor connector

Symptoms of P0038 2010 Nissan Sentra

  1. Check engine light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or engine misfires
  4. Failed emissions test
  5. Delayed engine warm-up

How to Fix P0038 2010 Nissan Sentra

  1. Diagnose the issue by using a scan tool to verify the P0038 code and perform a visual inspection of the oxygen sensor and related wiring.
  2. Test the oxygen sensor heater circuit for continuity and resistance to determine if the sensor heater element is faulty.
  3. Check for any wiring issues or corrosion in the sensor connector and repair or replace as necessary.
  4. Replace the downstream oxygen sensor (HO2S12) if the heater element is confirmed to be faulty.
  5. Clear the DTC and perform a test drive to ensure the code does not return.

Cost to Fix P0038 2010 Nissan Sentra

The cost of repairing a P0038 code on a 2010 Nissan Sentra can vary depending on the specific cause of the issue. Typically, the price of a new downstream oxygen sensor (HO2S12) ranges from $50 to $200, depending on the brand and quality. Labor costs for this repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Additional costs may include diagnostic time and any other necessary parts or repairs. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your specific vehicle and location.

Tech Notes for P0038 2010 Nissan Sentra

See more pictures on link below



2007-2012 Nissan Sentra Air/Fuel Ratio - Oxygen Sensor Location

When is the Code Detected?

The P0038 is set when the ECM detects an excessively high voltage through the heated oxygen sensor heater circuit

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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 P0038 2010 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0038 in a 2010 Nissan Sentra?

The common symptoms of OBDII code P0038 (HO2S12 Heater Control Circuit High) in a 2010 Nissan Sentra include poor fuel economy, rough idling, and an illuminated Check Engine Light.

2. What does the OBDII code P0038 indicate in a 2010 Nissan Sentra?

OBDII code P0038 in a 2010 Nissan Sentra indicates that there is a high voltage condition detected in the Heater Control Circuit of the HO2S12 (Heated Oxygen Sensor Bank 1 Sensor 2).

3. What are the possible causes of OBDII code P0038 in a 2010 Nissan Sentra?

Possible causes of OBDII code P0038 in a 2010 Nissan Sentra include a faulty HO2S12 sensor, damaged wiring or connectors in the heater circuit, a blown heater circuit fuse, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P0038 in my 2010 Nissan Sentra?

To diagnose OBDII code P0038 in a 2010 Nissan Sentra, you can start by checking the wiring and connectors related to the HO2S12 sensor, inspecting the sensor for damage, testing the heater circuit for continuity, and verifying the fuse integrity.

5. Can I continue driving my 2010 Nissan Sentra with OBDII code P0038?

It is not recommended to continue driving your 2010 Nissan Sentra with OBDII code P0038, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time. It is best to address the issue promptly.

6. How can I repair OBDII code P0038 in my 2010 Nissan Sentra?

To repair OBDII code P0038 in your 2010 Nissan Sentra, you may need to replace the HO2S12 sensor, repair any damaged wiring or connectors, replace a blown fuse if necessary, and clear the error code with an OBDII scanner.

7. Is it possible to reset the OBDII code P0038 in a 2010 Nissan Sentra without fixing the issue?

While you can clear the OBDII code P0038 with an OBDII scanner without fixing the underlying issue, the Check Engine Light is likely to come back on once the ECM detects the problem again. It is recommended to address the root cause of the code.

8. How much does it cost to fix OBDII code P0038 in a 2010 Nissan Sentra?

The cost to fix OBDII code P0038 in a 2010 Nissan Sentra can vary depending on the specific issue causing the code. Repair costs may include the price of a new HO2S12 sensor, wiring repairs, and labor charges from a mechanic.

9. Can a DIY enthusiast repair OBDII code P0038 in a 2010 Nissan Sentra?

Depending on your skill level and access to tools, a DIY enthusiast may be able to repair OBDII code P0038 in a 2010 Nissan Sentra by replacing the HO2S12 sensor or addressing wiring issues. However, complex repairs may require professional assistance.

10. How often does OBDII code P0038 occur in a 2010 Nissan Sentra?

OBDII code P0038 (HO2S12 Heater Control Circuit High) is not a common issue in a 2010 Nissan Sentra, but it can occur due to sensor or circuit malfunctions. If you encounter this code, it should be addressed promptly to prevent further complications.

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